{"id":43286,"date":"2024-04-03T17:10:08","date_gmt":"2024-04-03T09:10:08","guid":{"rendered":"https:\/\/shop.autooltech.com\/?post_type=product&#038;p=43286"},"modified":"2026-05-20T23:43:05","modified_gmt":"2026-05-21T07:43:05","slug":"autool-spt301-automotive-spark-plug-tester","status":"publish","type":"product","link":"https:\/\/autoolstore.com\/da\/product\/autool-spt301-automotive-spark-plug-tester\/","title":{"rendered":"AUTOOL SPT301 Car Spark Tester Automotive Diagnostic"},"content":{"rendered":"<div class=\"autool-description autool-description-spt301\">\n  <section id=\"autool-overview\" class=\"autool-section\" data-autool-nav=\"Overview\">\n    <div class=\"autool-split autool-split-overview\">\n      <div class=\"autool-copy-panel\">\n        <div class=\"autool-eyebrow\">AUTOOL SPT301<\/div>\n        <h2 class=\"autool-title\">Product Overview<\/h2>\n        <p class=\"autool-lead\">The AUTOOL SPT301 car spark tester is designed to test spark plug performance and spark strength under simulated engine working conditions. It supports three-hole comparative testing, 200-9000 RPM adjustment, a digital RPM display, and a transparent safety cover for safer visual inspection of common crankshaft-engine and motorcycle spark plugs.<\/p>\n        <div class=\"autool-chip-row\" aria-label=\"AUTOOL SPT301 key capabilities\">\n          <span class=\"autool-chip\">Three-Hole Testing<\/span>\n          <span class=\"autool-chip\">200-9000 RPM<\/span>\n          <span class=\"autool-chip\">Digital Display<\/span>\n          <span class=\"autool-chip\">Safety Cover<\/span>\n        <\/div>\n        <div class=\"autool-stat-row\" aria-label=\"AUTOOL SPT301 quick specifications\">\n          <div class=\"autool-stat\"><span class=\"autool-stat-value\">AC 110V \/ 220V<\/span><span class=\"autool-stat-label\">Input Power<\/span><\/div>\n          <div class=\"autool-stat\"><span class=\"autool-stat-value\">3<\/span><span class=\"autool-stat-label\">Test Holes<\/span><\/div>\n          <div class=\"autool-stat\"><span class=\"autool-stat-value\">9000 RPM<\/span><span class=\"autool-stat-label\">Max Simulation<\/span><\/div>\n          <div class=\"autool-stat\"><span class=\"autool-stat-value\">3 Years<\/span><span class=\"autool-stat-label\">Main Unit Warranty<\/span><\/div>\n        <\/div>\n      <\/div>\n      <figure class=\"autool-media-card autool-single-image\">\n        <img decoding=\"async\" src=\"https:\/\/autoolstore.com\/wp-content\/uploads\/autool-localized-resources\/2026-05-11\/images\/autool-spt301-spark-plug-tester-main-product-three.png\" alt=\"AUTOOL SPT301 spark plug tester main product image with three-hole design 9000 RPM digital display and safety cover\" loading=\"eager\">\n      \n        <span class=\"autool-media-hint\">Click to enlarge<\/span>\n      <\/figure>\n    <\/div>\n  <\/section>\n\n  <section id=\"autool-notes\" class=\"autool-section autool-section-tonal\" data-autool-nav=\"Notes\">\n    <div class=\"autool-section-head\">\n      <div class=\"autool-eyebrow\">Before You Order And Use<\/div>\n      <h2 class=\"autool-title\">Before You Order And Use<\/h2>\n      <p class=\"autool-lead\">SPT301 is a high-frequency spark plug tester. Read the power, protective cover, high-voltage, and maintenance notes before inserting spark plugs or starting a test.<\/p>\n    <\/div>\n    <div class=\"autool-grid autool-grid-3\">\n      <article class=\"autool-card autool-card-accent\">\n        <h3 class=\"autool-card-title\">Power Off Before Installing Plugs<\/h3>\n        <p class=\"autool-card-copy\">Do not insert or remove spark plugs while the power supply is connected. Turn off the tester before installing, removing, or repositioning spark plugs.<\/p>\n      <\/article>\n      <article class=\"autool-card\">\n        <h3 class=\"autool-card-title\">Close The Safety Cover<\/h3>\n        <p class=\"autool-card-copy\">Close the transparent protective cover before testing. It helps reduce direct exposure to sparks during visual observation.<\/p>\n      <\/article>\n      <article class=\"autool-card\">\n        <h3 class=\"autool-card-title\">Do Not Touch During Operation<\/h3>\n        <p class=\"autool-card-copy\">When the spark plug is running, the voltage can reach tens of thousands of volts. Do not touch the spark plug directly with bare hands.<\/p>\n      <\/article>\n      <article class=\"autool-card\">\n        <h3 class=\"autool-card-title\">Use Correct Input Power<\/h3>\n        <p class=\"autool-card-copy\">Use AC 110V \/ 220V \u00b110% input power as specified for the SPT301 spark plug tester.<\/p>\n      <\/article>\n      <article class=\"autool-card\">\n        <h3 class=\"autool-card-title\">Use For Suitable Spark Plugs<\/h3>\n        <p class=\"autool-card-copy\">SPT301 is suitable for common 12V automotive spark plug testing and motorcycle spark plug checks. Confirm size and fitment before testing unusual plug types.<\/p>\n      <\/article>\n      <article class=\"autool-card\">\n        <h3 class=\"autool-card-title\">Store In A Dry Place<\/h3>\n        <p class=\"autool-card-copy\">When not in use, store the tester in a dry, ventilated place. Avoid hot, humid, non-ventilated areas and contact with corrosive liquids.<\/p>\n      <\/article>\n    <\/div>\n    <div class=\"autool-use-note-stack\" aria-label=\"AUTOOL SPT301 maintenance notes\">\n      <div class=\"autool-notes-card\">\n        <h3 class=\"autool-card-title\">Maintenance Reminder<\/h3>\n        <ul class=\"autool-notes-list\">\n          <li>Regularly check parts that need to be tightened or connected. Tighten loose parts before operation.<\/li>\n          <li>Avoid rubbing the housing against rough surfaces to reduce wear.<\/li>\n          <li>Do not overload the equipment, and make sure the safety guard remains complete and reliable.<\/li>\n          <li>If wiring shows aging or damage, stop use and contact support before continuing.<\/li>\n        <\/ul>\n      <\/div>\n    <\/div>\n  <\/section>\n\n  <section id=\"autool-features\" class=\"autool-section\" data-autool-nav=\"Features\">\n    <div class=\"autool-section-head\">\n      <div class=\"autool-eyebrow\">Key Features<\/div>\n      <h2 class=\"autool-title\">Key Features<\/h2>\n      <p class=\"autool-lead\">SPT301 combines three-hole comparison, adjustable simulated RPM, digital display control, long spark plug support, and a safety cover to make spark plug condition checks faster and easier to observe.<\/p>\n    <\/div>\n    <div class=\"autool-grid autool-grid-3\">\n      <article class=\"autool-card autool-card-accent\">\n        <h3 class=\"autool-card-title\">Comparative Testing<\/h3>\n        <p class=\"autool-card-copy\">Test one standard or new spark plug together with two test spark plugs for a more straightforward visual comparison of spark strength and performance.<\/p>\n      <\/article>\n      <article class=\"autool-card\">\n        <h3 class=\"autool-card-title\">200-9000 RPM Simulation<\/h3>\n        <p class=\"autool-card-copy\">Simulate spark plug operating status during engine function with adjustable RPM. A higher simulated frequency shows stronger spark intensity during testing.<\/p>\n      <\/article>\n      <article class=\"autool-card\">\n        <h3 class=\"autool-card-title\">Three-Hole Design<\/h3>\n        <p class=\"autool-card-copy\">The three-hole layout supports simultaneous comparison of three spark plug positions, making it suitable for efficient 12V automotive spark plug checks.<\/p>\n      <\/article>\n      <article class=\"autool-card\">\n        <h3 class=\"autool-card-title\">Adjustable Test Hole Height<\/h3>\n        <p class=\"autool-card-copy\">The adjustable test hole height helps support longer spark plug ends and improves compatibility for models that use longer plug structures.<\/p>\n      <\/article>\n      <article class=\"autool-card\">\n        <h3 class=\"autool-card-title\">Digital RPM Display<\/h3>\n        <p class=\"autool-card-copy\">The LCD digital backlit display clearly shows the simulated RPM, helping users control test conditions with better visibility.<\/p>\n      <\/article>\n      <article class=\"autool-card\">\n        <h3 class=\"autool-card-title\">Transparent Safety Cover<\/h3>\n        <p class=\"autool-card-copy\">The protective cover lets users observe spark behavior while reducing direct spark exposure during operation.<\/p>\n      <\/article>\n    <\/div>\n\n    <div class=\"autool-image-scroll autool-media-slider autool-feature-gallery\" aria-label=\"AUTOOL SPT301 feature images\">\n      <figure class=\"autool-media-card\"><img decoding=\"async\" src=\"https:\/\/autoolstore.com\/wp-content\/uploads\/autool-localized-resources\/2026-05-11\/images\/autool-spt301-simulated-rpm-testing-range-200-9000.png\" alt=\"AUTOOL SPT301 simulated RPM testing range 200 to 9000 RPM\" loading=\"lazy\">\n        <span class=\"autool-media-hint\">Click to enlarge<\/span>\n      <\/figure>\n      <figure class=\"autool-media-card\"><img decoding=\"async\" src=\"https:\/\/autoolstore.com\/wp-content\/uploads\/autool-localized-resources\/2026-05-11\/images\/autool-spt301-comparative-testing-one-normal-plug-hole.png\" alt=\"AUTOOL SPT301 comparative testing with one normal plug hole and two test plug holes\" loading=\"lazy\">\n        <span class=\"autool-media-hint\">Click to enlarge<\/span>\n      <\/figure>\n      <figure class=\"autool-media-card\"><img decoding=\"async\" src=\"https:\/\/autoolstore.com\/wp-content\/uploads\/autool-localized-resources\/2026-05-11\/images\/autool-spt301-transparent-safety-cover-safer-spark-plug.png\" alt=\"AUTOOL SPT301 transparent safety cover for safer spark plug testing\" loading=\"lazy\">\n        <span class=\"autool-media-hint\">Click to enlarge<\/span>\n      <\/figure>\n      <figure class=\"autool-media-card\"><img decoding=\"async\" src=\"https:\/\/autoolstore.com\/wp-content\/uploads\/autool-localized-resources\/2026-05-11\/images\/autool-spt301-digital-screen-display-simulated-engine-rpm.png\" alt=\"AUTOOL SPT301 digital screen display for simulated engine RPM\" loading=\"lazy\">\n        <span class=\"autool-media-hint\">Click to enlarge<\/span>\n      <\/figure>\n      <figure class=\"autool-media-card\"><img decoding=\"async\" src=\"https:\/\/autoolstore.com\/wp-content\/uploads\/autool-localized-resources\/2026-05-11\/images\/autool-spt301-three-hole-design-12mm-spark-plug.png\" alt=\"AUTOOL SPT301 three-hole design with 12mm spark plug test holes\" loading=\"lazy\">\n        <span class=\"autool-media-hint\">Click to enlarge<\/span>\n      <\/figure>\n      <figure class=\"autool-media-card\"><img decoding=\"async\" src=\"https:\/\/autoolstore.com\/wp-content\/uploads\/autool-localized-resources\/2026-05-11\/images\/autool-spt301-adjustable-test-hole-height-longer-spark.png\" alt=\"AUTOOL SPT301 adjustable test hole height for longer spark plug ends\" loading=\"lazy\">\n        <span class=\"autool-media-hint\">Click to enlarge<\/span>\n      <\/figure>\n      <figure class=\"autool-media-card\"><img decoding=\"async\" src=\"https:\/\/autoolstore.com\/wp-content\/uploads\/autool-localized-resources\/2026-05-11\/images\/autool-spt301-product-structure-standard-test-hole-test.png\" alt=\"AUTOOL SPT301 product structure with standard test hole test holes display screen RPM buttons power switch and power port\" loading=\"lazy\">\n        <span class=\"autool-media-hint\">Click to enlarge<\/span>\n      <\/figure>\n    <\/div>\n  <\/section>\n\n  <section id=\"autool-specs\" class=\"autool-section\" data-autool-nav=\"Specs\">\n    <div class=\"autool-section-head\">\n      <div class=\"autool-eyebrow\">Specifications<\/div>\n      <h2 class=\"autool-title\">AUTOOL SPT301 Product Specifications<\/h2>\n      <p class=\"autool-lead\">SPT301 uses AC 110V \/ 220V input power, DC12V output, 200-9000 RPM simulated speed, and a compact 200 \u00d7 118 \u00d7 118mm body with a 500g product weight.<\/p>\n    <\/div>\n\n    <div class=\"autool-split autool-split-media-right autool-split-specs autool-specs-table-media autool-specs-normal-table-media\">\n      <div class=\"autool-table-wrap autool-specs-table\" role=\"region\" aria-label=\"AUTOOL SPT301 specifications table\">\n        <table class=\"autool-table\">\n<tbody>\n            <tr class=\"autool-table-category\"><td colspan=\"2\">Core Specifications<\/td><\/tr>\n            <tr><td>Product<\/td><td>AUTOOL SPT301 Car Spark Plug Tester<\/td><\/tr>\n            <tr><td>Working Principle<\/td><td>Digital sensing<\/td><\/tr>\n            <tr><td>Input Power<\/td><td>AC 110V \/ 220V \u00b110%<\/td><\/tr>\n            <tr><td>Output Power<\/td><td>DC12V \u00b12 1A<\/td><\/tr>\n            <tr><td>Simulated RPM<\/td><td>200-9000 RPM<\/td><\/tr>\n            <tr><td>Ambient Temperature<\/td><td>0\u00b0C-45\u00b0C<\/td><\/tr>\n            <tr><td>Relative Humidity<\/td><td>&lt;85%<\/td><\/tr>\n            <tr><td>Product Dimensions<\/td><td>200 \u00d7 118 \u00d7 118mm<\/td><\/tr>\n            <tr><td>Product Weight<\/td><td>500g<\/td><\/tr>\n            <tr class=\"autool-table-category\"><td colspan=\"2\">Testing And Display<\/td><\/tr>\n            <tr><td>Test Hole Positions<\/td><td>3<\/td><\/tr>\n            <tr><td>Adjustable Hole Position Height<\/td><td>Supported<\/td><\/tr>\n            <tr><td>Working Condition Simulation<\/td><td>Supported<\/td><\/tr>\n            <tr><td>Adjustable Simulated RPM<\/td><td>Supported<\/td><\/tr>\n            <tr><td>LCD Digital Backlit Screen<\/td><td>Supported<\/td><\/tr>\n            <tr><td>Long Spark Plug Testing<\/td><td>Supported<\/td><\/tr>\n            <tr><td>Safety Protection Cover<\/td><td>Supported<\/td><\/tr>\n            <tr class=\"autool-table-category\"><td colspan=\"2\">Product Structure<\/td><\/tr>\n            <tr><td>Standard Test Hole<\/td><td>Reference plug position for comparison<\/td><\/tr>\n            <tr><td>Test Holes<\/td><td>Two test plug positions<\/td><\/tr>\n            <tr><td>Controls<\/td><td>RPM \u201c+\u201d, RPM \u201c-\u201d, and power switch<\/td><\/tr>\n            <tr><td>Interface<\/td><td>Display screen and power port<\/td><\/tr>\n          <\/tbody>\n        <\/table>\n      <\/div>\n<figure class=\"autool-media-card autool-single-image autool-specs-media-card\">\n        <img decoding=\"async\" src=\"https:\/\/autoolstore.com\/wp-content\/uploads\/autool-localized-resources\/2026-05-11\/images\/autool-spt301-product-specifications-showing-power-rpm-temperature.png\" alt=\"AUTOOL SPT301 product specifications showing power RPM temperature humidity dimensions and weight\" loading=\"lazy\">\n      \n        <span class=\"autool-media-hint\">Click to enlarge<\/span>\n      <\/figure>\n<\/div>\n\n    \n\n    <div class=\"autool-mobile-specs\" aria-label=\"AUTOOL SPT301 mobile specifications\">\n      <details class=\"autool-mobile-accordion\" open>\n        <summary>Core Specifications<\/summary>\n        <div class=\"autool-mobile-accordion-content\">\n          <div class=\"autool-mobile-spec-row\"><span>Input Power<\/span><strong>AC 110V \/ 220V \u00b110%<\/strong><\/div>\n          <div class=\"autool-mobile-spec-row\"><span>Output Power<\/span><strong>DC12V \u00b12 1A<\/strong><\/div>\n          <div class=\"autool-mobile-spec-row\"><span>Simulated RPM<\/span><strong>200-9000 RPM<\/strong><\/div>\n          <div class=\"autool-mobile-spec-row\"><span>Ambient Temperature<\/span><strong>0\u00b0C-45\u00b0C<\/strong><\/div>\n          <div class=\"autool-mobile-spec-row\"><span>Relative Humidity<\/span><strong>&lt;85%<\/strong><\/div>\n          <div class=\"autool-mobile-spec-row\"><span>Dimensions<\/span><strong>200 \u00d7 118 \u00d7 118mm<\/strong><\/div>\n          <div class=\"autool-mobile-spec-row\"><span>Weight<\/span><strong>500g<\/strong><\/div>\n        <\/div>\n      <\/details>\n      <details class=\"autool-mobile-accordion\">\n        <summary>Testing Features<\/summary>\n        <div class=\"autool-mobile-accordion-content\">\n          <div class=\"autool-mobile-spec-row\"><span>Test Holes<\/span><strong>3<\/strong><\/div>\n          <div class=\"autool-mobile-spec-row\"><span>Adjustable Hole Height<\/span><strong>Supported<\/strong><\/div>\n          <div class=\"autool-mobile-spec-row\"><span>LCD Backlit Screen<\/span><strong>Supported<\/strong><\/div>\n          <div class=\"autool-mobile-spec-row\"><span>Long Spark Plug Support<\/span><strong>Supported<\/strong><\/div>\n          <div class=\"autool-mobile-spec-row\"><span>Safety Cover<\/span><strong>Supported<\/strong><\/div>\n        <\/div>\n      <\/details>\n    <\/div>\n  <\/section>\n\n  <section id=\"autool-use\" class=\"autool-section\" data-autool-nav=\"Use\">\n    <div class=\"autool-section-head\">\n      <div class=\"autool-eyebrow\">How To Use<\/div>\n      <h2 class=\"autool-title\">How To Use<\/h2>\n      <p class=\"autool-lead\">Install the spark plugs, close the protective cover, connect power, adjust the simulated RPM, and observe the spark plug test status through the transparent cover.<\/p>\n    <\/div>\n\n    <div class=\"autool-steps autool-steps-count-4 autool-steps-layout-4\">\n      <article class=\"autool-step\">\n        <h3 class=\"autool-card-title\">Place The Spark Plugs<\/h3>\n        <p class=\"autool-card-copy\">Insert the standard spark plug into the standard test hole, then insert the spark plugs to be tested into the test holes.<\/p>\n      <\/article>\n      <article class=\"autool-step\">\n        <h3 class=\"autool-card-title\">Close The Protective Cover<\/h3>\n        <p class=\"autool-card-copy\">Cover the protective cover before testing to reduce direct spark exposure and improve safety during observation.<\/p>\n      <\/article>\n      <article class=\"autool-step\">\n        <h3 class=\"autool-card-title\">Connect Power And Start<\/h3>\n        <p class=\"autool-card-copy\">Plug the power adapter into the side power interface, connect the power supply, and turn on the power switch.<\/p>\n      <\/article>\n      <article class=\"autool-step\">\n        <h3 class=\"autool-card-title\">Adjust RPM And Observe<\/h3>\n        <p class=\"autool-card-copy\">Use the \u201c+\u201d and \u201c-\u201d buttons to adjust the working frequency, then observe the spark plug test status through the protective cover.<\/p>\n      <\/article>\n    <\/div>\n\n    <div class=\"autool-use-note-stack\" aria-label=\"AUTOOL SPT301 use notes\">\n      <div class=\"autool-notes-card\">\n        <h3 class=\"autool-card-title\">Use Notes<\/h3>\n        <ul class=\"autool-notes-list\">\n          <li>Turn off the power before inserting, removing, or adjusting spark plugs.<\/li>\n          <li>Do not touch the spark plug directly during operation.<\/li>\n          <li>The higher the working frequency, the stronger the displayed spark plug intensity during testing.<\/li>\n          <li>If the spark plug is unusually long or has an uncommon structure, confirm the fit before testing.<\/li>\n        <\/ul>\n      <\/div>\n    <\/div>\n  <\/section>\n\n  <section id=\"autool-comparison\" class=\"autool-section autool-section-tonal autool-section-comparison autool-unbounded-media-panel autool-single-media-padding-parity autool-media-padding-parity\" data-autool-nav=\"Comparison\">\n    <div class=\"autool-split autool-split-media-right\">\n      <div class=\"autool-copy-panel\">\n        <div class=\"autool-eyebrow\">Product Comparison<\/div>\n        <h2 class=\"autool-title\">Product Comparison<\/h2>\n        <p class=\"autool-lead\">Compare SPT301 with SPT101, SPT105, and SPT360 before choosing the right hole count, RPM range, digital display, long spark plug support, and comparison capacity.<\/p>\n        <div class=\"autool-detail-list\" aria-label=\"AUTOOL spark plug tester comparison summary\">\n          <div class=\"autool-detail-item\"><span>SPT101<\/span><strong>Entry dual-hole model with 0-6000 RPM, safety cover, adjustable simulated RPM, and no LCD digital backlit screen or long spark plug support.<\/strong><\/div>\n          <div class=\"autool-detail-item\"><span>SPT105<\/span><strong>Dual-hole model with 0-6000 RPM, adjustable hole position height, safety cover, adjustable simulated RPM, and long spark plug support.<\/strong><\/div>\n          <div class=\"autool-detail-item\"><span>SPT301<\/span><strong>Three-hole model with 200-9000 RPM, adjustable hole position height, safety cover, LCD digital backlit screen, and long spark plug support.<\/strong><\/div>\n          <div class=\"autool-detail-item\"><span>SPT360<\/span><strong>Five-hole model with 200-9000 RPM, LCD digital backlit screen, and higher comparison capacity for users who need more test positions.<\/strong><\/div>\n          <div class=\"autool-detail-item\"><span>Decision Check<\/span><strong>Choose by test hole count, RPM range, adjustable height, digital display, long spark plug compatibility, and workshop testing volume.<\/strong><\/div>\n        <\/div>\n      <\/div>\n      <figure class=\"autool-media-card autool-single-image autool-compare-image autool-package-media\">\n        <img decoding=\"async\" src=\"https:\/\/autoolstore.com\/wp-content\/uploads\/autool-localized-resources\/2026-05-11\/images\/autool-spark-plug-tester-model-comparison-chart.png\" alt=\"AUTOOL spark plug tester model comparison chart\" loading=\"lazy\">\n        <span class=\"autool-media-hint\">Click to enlarge<\/span>\n      <\/figure>\n    <\/div>\n  <\/section>\n\n  <section id=\"autool-products\" class=\"autool-section\" data-autool-nav=\"Products\">\n    <div class=\"autool-section-head\">\n      <div class=\"autool-eyebrow\">Related Products<\/div>\n      <h2 class=\"autool-title\">Related Products<\/h2>\n      <p class=\"autool-lead\">Compare related AUTOOL spark plug tester models before choosing the right test-hole count, RPM range, LCD display, adjustable hole height, and long spark plug compatibility.<\/p>\n    <\/div>\n\n    <div class=\"autool-products-block\">\n      <div class=\"autool-products-slider\" aria-label=\"AUTOOL automotive spark plug tester product cards\">\n        <div class=\"woocommerce columns-4\"><ul class=\"products columns-4\" data-products=\"type-3\" data-hover=\"swap\">\n<li class=\"product type-product post-25296 status-publish first instock product_cat-automotive-repair-testing-equipment product_cat-spark-plug-tester product_tag-measurement-tools product_tag-multi-warehouse-shipping product_tag-voltage-options product_tag-workshop-diagnostic-tools has-post-thumbnail shipping-taxable purchasable product-type-variable has-default-attributes\">\n\t<a href=\"https:\/\/autoolstore.com\/da\/product\/autool-spt101-spark-plug-tester-for-12v-vehicles\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/autoolstore.com\/wp-content\/uploads\/2025\/03\/SPT101-300x300.jpg\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"AUTOOL SPT101 Spark Plug Tester Spark Plug Checker\" srcset=\"https:\/\/autoolstore.com\/wp-content\/uploads\/2025\/03\/SPT101-300x300.jpg 300w, https:\/\/autoolstore.com\/wp-content\/uploads\/2025\/03\/SPT101-100x100.jpg 100w, https:\/\/autoolstore.com\/wp-content\/uploads\/2025\/03\/SPT101-600x600.jpg 600w, https:\/\/autoolstore.com\/wp-content\/uploads\/2025\/03\/SPT101-500x500.jpg 500w, https:\/\/autoolstore.com\/wp-content\/uploads\/2025\/03\/SPT101-150x150.jpg 150w, https:\/\/autoolstore.com\/wp-content\/uploads\/2025\/03\/SPT101-768x768.jpg 768w, https:\/\/autoolstore.com\/wp-content\/uploads\/2025\/03\/SPT101.jpg 800w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><h2 class=\"woocommerce-loop-product__title\">AUTOOL SPT101 Spark Plug Tester Spark Plug Checker<\/h2><div class=\"star-rating\" role=\"img\" aria-label=\"Vurderet 4.96 ud af 5\" data-no-translation-aria-label=\"\"><span style=\"width:99.2%\" data-no-translation=\"\" data-trp-gettext=\"\">Vurderet <strong class=\"rating\">4.96<\/strong> ud af 5<\/span><\/div>\n\t<span class=\"price\"><span class=\"wcpbc-price wcpbc-price-25296\" data-product-id=\"25296\"><span class=\"autool-card-from-price\" data-autool-price-mode=\"from\">From <span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">US&#036;<\/span>39.90<\/span><\/span><\/span><\/span>\n<\/a><a href=\"https:\/\/autoolstore.com\/da\/product\/autool-spt101-spark-plug-tester-for-12v-vehicles\/\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_25296\" data-quantity=\"1\" class=\"button product_type_variable add_to_cart_button\" data-product_id=\"25296\" data-product_sku=\"MMT210041-8\" aria-label=\"V\u00e6lg muligheder for \u201cAUTOOL SPT101 Spark Plug Tester Spark Plug Checker\u201d\" rel=\"nofollow\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\">V\u00e6lg muligheder<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_25296\" class=\"screen-reader-text\">\n\t\tDette vare har flere varianter. Mulighederne kan v\u00e6lges p\u00e5 varesiden\t<\/span>\n<div class=\"autool-card-bottom-actions\" data-autool-card-layer=\"bottom-cart\"><a href=\"https:\/\/autoolstore.com\/da\/product\/autool-spt101-spark-plug-tester-for-12v-vehicles\/\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_25296\" data-quantity=\"1\" class=\"button product_type_variable add_to_cart_button\" data-product_id=\"25296\" data-product_sku=\"MMT210041-8\" aria-label=\"V\u00e6lg muligheder for \u201cAUTOOL SPT101 Spark Plug Tester Spark Plug Checker\u201d\" rel=\"nofollow\" data-no-translation-aria-label=\"\"><span class=\"autool-card-button-icon\" aria-hidden=\"true\"><svg viewbox=\"0 0 18 18\" focusable=\"false\" role=\"presentation\"><path d=\"M5.2 5.4h11.1l-1.2 5.5a2 2 0 0 1-2 1.6H7.4a2 2 0 0 1-2-1.6L4.2 2.8H2.1\" \/><circle cx=\"7.6\" cy=\"15\" r=\"1.1\" \/><circle cx=\"13.1\" cy=\"15\" r=\"1.1\" \/><\/svg><\/span><span class=\"autool-card-button-label\" data-no-translation=\"\" data-trp-gettext=\"\">V\u00e6lg muligheder<\/span><\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_25296\" class=\"screen-reader-text\">\n\t\tDette vare har flere varianter. Mulighederne kan v\u00e6lges p\u00e5 varesiden\t<\/span>\n<\/div><\/li>\n<li class=\"product type-product post-45632 status-publish instock product_cat-automotive-repair-testing-equipment product_cat-spark-plug-tester product_tag-best-seller product_tag-measurement-tools product_tag-multi-warehouse-shipping product_tag-new-arrival product_tag-voltage-options product_tag-workshop-diagnostic-tools has-post-thumbnail shipping-taxable purchasable product-type-variable has-default-attributes\">\n\t<a href=\"https:\/\/autoolstore.com\/da\/product\/autool-spt105-car-spark-plug-tester-with-auto-adjustable-for-12v-vehicles\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/autoolstore.com\/wp-content\/uploads\/2025\/03\/SPT105-300x300.jpg\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"AUTOOL SPT105 Spark Plug Tester Tool Adjustable Spark Tester\" srcset=\"https:\/\/autoolstore.com\/wp-content\/uploads\/2025\/03\/SPT105-300x300.jpg 300w, https:\/\/autoolstore.com\/wp-content\/uploads\/2025\/03\/SPT105-100x100.jpg 100w, https:\/\/autoolstore.com\/wp-content\/uploads\/2025\/03\/SPT105-600x600.jpg 600w, https:\/\/autoolstore.com\/wp-content\/uploads\/2025\/03\/SPT105-500x500.jpg 500w, https:\/\/autoolstore.com\/wp-content\/uploads\/2025\/03\/SPT105-150x150.jpg 150w, https:\/\/autoolstore.com\/wp-content\/uploads\/2025\/03\/SPT105-768x768.jpg 768w, https:\/\/autoolstore.com\/wp-content\/uploads\/2025\/03\/SPT105.jpg 800w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><h2 class=\"woocommerce-loop-product__title\">AUTOOL SPT105 Spark Plug Tester Tool Adjustable Spark Tester<\/h2><div class=\"star-rating\" role=\"img\" aria-label=\"Vurderet 5.00 ud af 5\" data-no-translation-aria-label=\"\"><span style=\"width:100%\" data-no-translation=\"\" data-trp-gettext=\"\">Vurderet <strong class=\"rating\">5.00<\/strong> ud af 5<\/span><\/div>\n\t<span class=\"price\"><span class=\"wcpbc-price wcpbc-price-45632\" data-product-id=\"45632\"><span class=\"autool-card-from-price\" data-autool-price-mode=\"from\">From <span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">US&#036;<\/span>32.90<\/span><\/span><\/span><\/span>\n<\/a><a href=\"https:\/\/autoolstore.com\/da\/product\/autool-spt105-car-spark-plug-tester-with-auto-adjustable-for-12v-vehicles\/\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_45632\" data-quantity=\"1\" class=\"button product_type_variable add_to_cart_button\" data-product_id=\"45632\" data-product_sku=\"\" aria-label=\"V\u00e6lg muligheder for \u201cAUTOOL SPT105 Spark Plug Tester Tool Adjustable Spark Tester\u201d\" rel=\"nofollow\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\">V\u00e6lg muligheder<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_45632\" class=\"screen-reader-text\">\n\t\tDette vare har flere varianter. Mulighederne kan v\u00e6lges p\u00e5 varesiden\t<\/span>\n<div class=\"autool-card-bottom-actions\" data-autool-card-layer=\"bottom-cart\"><a href=\"https:\/\/autoolstore.com\/da\/product\/autool-spt105-car-spark-plug-tester-with-auto-adjustable-for-12v-vehicles\/\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_45632\" data-quantity=\"1\" class=\"button product_type_variable add_to_cart_button\" data-product_id=\"45632\" data-product_sku=\"\" aria-label=\"V\u00e6lg muligheder for \u201cAUTOOL SPT105 Spark Plug Tester Tool Adjustable Spark Tester\u201d\" rel=\"nofollow\" data-no-translation-aria-label=\"\"><span class=\"autool-card-button-icon\" aria-hidden=\"true\"><svg viewbox=\"0 0 18 18\" focusable=\"false\" role=\"presentation\"><path d=\"M5.2 5.4h11.1l-1.2 5.5a2 2 0 0 1-2 1.6H7.4a2 2 0 0 1-2-1.6L4.2 2.8H2.1\" \/><circle cx=\"7.6\" cy=\"15\" r=\"1.1\" \/><circle cx=\"13.1\" cy=\"15\" r=\"1.1\" \/><\/svg><\/span><span class=\"autool-card-button-label\" data-no-translation=\"\" data-trp-gettext=\"\">V\u00e6lg muligheder<\/span><\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_45632\" class=\"screen-reader-text\">\n\t\tDette vare har flere varianter. Mulighederne kan v\u00e6lges p\u00e5 varesiden\t<\/span>\n<\/div><\/li>\n<li class=\"product type-product post-43286 status-publish instock product_cat-automotive-repair-testing-equipment product_cat-spark-plug-tester product_tag-best-seller product_tag-measurement-tools product_tag-multi-warehouse-shipping product_tag-new-arrival product_tag-voltage-options product_tag-workshop-diagnostic-tools has-post-thumbnail shipping-taxable purchasable product-type-variable has-default-attributes\">\n\t<a href=\"https:\/\/autoolstore.com\/da\/product\/autool-spt301-automotive-spark-plug-tester\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/autoolstore.com\/wp-content\/uploads\/2024\/04\/SPT301-300x300.jpg\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"AUTOOL SPT301 Car Spark Tester Automotive Diagnostic\" srcset=\"https:\/\/autoolstore.com\/wp-content\/uploads\/2024\/04\/SPT301-300x300.jpg 300w, https:\/\/autoolstore.com\/wp-content\/uploads\/2024\/04\/SPT301-150x150.jpg 150w, https:\/\/autoolstore.com\/wp-content\/uploads\/2024\/04\/SPT301-768x768.jpg 768w, https:\/\/autoolstore.com\/wp-content\/uploads\/2024\/04\/SPT301-500x500.jpg 500w, https:\/\/autoolstore.com\/wp-content\/uploads\/2024\/04\/SPT301-600x600.jpg 600w, https:\/\/autoolstore.com\/wp-content\/uploads\/2024\/04\/SPT301-100x100.jpg 100w, https:\/\/autoolstore.com\/wp-content\/uploads\/2024\/04\/SPT301.jpg 800w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><h2 class=\"woocommerce-loop-product__title\">AUTOOL SPT301 Car Spark Tester Automotive Diagnostic<\/h2><div class=\"star-rating\" role=\"img\" aria-label=\"Vurderet 4.89 ud af 5\" data-no-translation-aria-label=\"\"><span style=\"width:97.8%\" data-no-translation=\"\" data-trp-gettext=\"\">Vurderet <strong class=\"rating\">4.89<\/strong> ud af 5<\/span><\/div>\n\t<span class=\"price\"><span class=\"wcpbc-price wcpbc-price-43286\" data-product-id=\"43286\"><span class=\"autool-card-from-price\" data-autool-price-mode=\"from\">From <span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">US&#036;<\/span>59.00<\/span><\/span><\/span><\/span>\n<\/a><a href=\"https:\/\/autoolstore.com\/da\/product\/autool-spt301-automotive-spark-plug-tester\/\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_43286\" data-quantity=\"1\" class=\"button product_type_variable add_to_cart_button\" data-product_id=\"43286\" data-product_sku=\"MMT473\" aria-label=\"V\u00e6lg muligheder for \u201cAUTOOL SPT301 Car Spark Tester Automotive Diagnostic\u201d\" rel=\"nofollow\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\">V\u00e6lg muligheder<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_43286\" class=\"screen-reader-text\">\n\t\tDette vare har flere varianter. Mulighederne kan v\u00e6lges p\u00e5 varesiden\t<\/span>\n<div class=\"autool-card-bottom-actions\" data-autool-card-layer=\"bottom-cart\"><a href=\"https:\/\/autoolstore.com\/da\/product\/autool-spt301-automotive-spark-plug-tester\/\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_43286\" data-quantity=\"1\" class=\"button product_type_variable add_to_cart_button\" data-product_id=\"43286\" data-product_sku=\"MMT473\" aria-label=\"V\u00e6lg muligheder for \u201cAUTOOL SPT301 Car Spark Tester Automotive Diagnostic\u201d\" rel=\"nofollow\" data-no-translation-aria-label=\"\"><span class=\"autool-card-button-icon\" aria-hidden=\"true\"><svg viewbox=\"0 0 18 18\" focusable=\"false\" role=\"presentation\"><path d=\"M5.2 5.4h11.1l-1.2 5.5a2 2 0 0 1-2 1.6H7.4a2 2 0 0 1-2-1.6L4.2 2.8H2.1\" \/><circle cx=\"7.6\" cy=\"15\" r=\"1.1\" \/><circle cx=\"13.1\" cy=\"15\" r=\"1.1\" \/><\/svg><\/span><span class=\"autool-card-button-label\" data-no-translation=\"\" data-trp-gettext=\"\">V\u00e6lg muligheder<\/span><\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_43286\" class=\"screen-reader-text\">\n\t\tDette vare har flere varianter. Mulighederne kan v\u00e6lges p\u00e5 varesiden\t<\/span>\n<\/div><\/li>\n<li class=\"product type-product post-25309 status-publish last instock product_cat-automotive-repair-testing-equipment product_cat-spark-plug-tester product_tag-best-seller product_tag-measurement-tools product_tag-multi-warehouse-shipping product_tag-voltage-options product_tag-workshop-diagnostic-tools has-post-thumbnail shipping-taxable purchasable product-type-variable has-default-attributes\">\n\t<a href=\"https:\/\/autoolstore.com\/da\/product\/autool-spt360-car-spark-plug-tester-ignition-testers-automotive-diagnostic-tool-five-hole-spark-plug-flashover-analyzer-110-220v\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/autoolstore.com\/wp-content\/uploads\/2025\/03\/SPT360-300x300.jpg\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"AUTOOL SPT360 Spark Plug Tester Automotive Diagnostic\" srcset=\"https:\/\/autoolstore.com\/wp-content\/uploads\/2025\/03\/SPT360-300x300.jpg 300w, https:\/\/autoolstore.com\/wp-content\/uploads\/2025\/03\/SPT360-100x100.jpg 100w, https:\/\/autoolstore.com\/wp-content\/uploads\/2025\/03\/SPT360-600x600.jpg 600w, https:\/\/autoolstore.com\/wp-content\/uploads\/2025\/03\/SPT360-500x500.jpg 500w, https:\/\/autoolstore.com\/wp-content\/uploads\/2025\/03\/SPT360-150x150.jpg 150w, https:\/\/autoolstore.com\/wp-content\/uploads\/2025\/03\/SPT360-768x768.jpg 768w, https:\/\/autoolstore.com\/wp-content\/uploads\/2025\/03\/SPT360.jpg 800w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><h2 class=\"woocommerce-loop-product__title\">AUTOOL SPT360 Spark Plug Tester Automotive Diagnostic<\/h2><div class=\"star-rating\" role=\"img\" aria-label=\"Vurderet 4.97 ud af 5\" data-no-translation-aria-label=\"\"><span style=\"width:99.4%\" data-no-translation=\"\" data-trp-gettext=\"\">Vurderet <strong class=\"rating\">4.97<\/strong> ud af 5<\/span><\/div>\n\t<span class=\"price\"><span class=\"wcpbc-price wcpbc-price-25309\" data-product-id=\"25309\"><span class=\"autool-card-from-price\" data-autool-price-mode=\"from\">From <span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">US&#036;<\/span>59.00<\/span><\/span><\/span><\/span>\n<\/a><a href=\"https:\/\/autoolstore.com\/da\/product\/autool-spt360-car-spark-plug-tester-ignition-testers-automotive-diagnostic-tool-five-hole-spark-plug-flashover-analyzer-110-220v\/\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_25309\" data-quantity=\"1\" class=\"button product_type_variable add_to_cart_button\" data-product_id=\"25309\" data-product_sku=\"MMT210041-11(110V)\/MMT210041-12(220V)\" aria-label=\"V\u00e6lg muligheder for \u201cAUTOOL SPT360 Spark Plug Tester Automotive Diagnostic\u201d\" rel=\"nofollow\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\">V\u00e6lg muligheder<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_25309\" class=\"screen-reader-text\">\n\t\tDette vare har flere varianter. Mulighederne kan v\u00e6lges p\u00e5 varesiden\t<\/span>\n<div class=\"autool-card-bottom-actions\" data-autool-card-layer=\"bottom-cart\"><a href=\"https:\/\/autoolstore.com\/da\/product\/autool-spt360-car-spark-plug-tester-ignition-testers-automotive-diagnostic-tool-five-hole-spark-plug-flashover-analyzer-110-220v\/\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_25309\" data-quantity=\"1\" class=\"button product_type_variable add_to_cart_button\" data-product_id=\"25309\" data-product_sku=\"MMT210041-11(110V)\/MMT210041-12(220V)\" aria-label=\"V\u00e6lg muligheder for \u201cAUTOOL SPT360 Spark Plug Tester Automotive Diagnostic\u201d\" rel=\"nofollow\" data-no-translation-aria-label=\"\"><span class=\"autool-card-button-icon\" aria-hidden=\"true\"><svg viewbox=\"0 0 18 18\" focusable=\"false\" role=\"presentation\"><path d=\"M5.2 5.4h11.1l-1.2 5.5a2 2 0 0 1-2 1.6H7.4a2 2 0 0 1-2-1.6L4.2 2.8H2.1\" \/><circle cx=\"7.6\" cy=\"15\" r=\"1.1\" \/><circle cx=\"13.1\" cy=\"15\" r=\"1.1\" \/><\/svg><\/span><span class=\"autool-card-button-label\" data-no-translation=\"\" data-trp-gettext=\"\">V\u00e6lg muligheder<\/span><\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_25309\" class=\"screen-reader-text\">\n\t\tDette vare har flere varianter. Mulighederne kan v\u00e6lges p\u00e5 varesiden\t<\/span>\n<\/div><\/li>\n<\/ul>\n<\/div>\n      <\/div>\n    <\/div>\n  <\/section>\n\n  <section id=\"autool-guide\" class=\"autool-section\" data-autool-nav=\"Guide\">\n    <div class=\"autool-section-head\">\n      <div class=\"autool-eyebrow\">Related Guides<\/div>\n      <h2 class=\"autool-title\">Related Guides<\/h2>\n      <p class=\"autool-lead\">Review spark plug replacement signs, spark plug tester basics, and routine maintenance topics before choosing the right AUTOOL spark plug tester.<\/p>\n    <\/div>\n    <div class=\"autool-guide-grid\" aria-label=\"AUTOOL SPT301 guide cards\">\n      <article class=\"autool-guide-card\">\n        <a class=\"autool-guide-media\" href=\"https:\/\/autoolstore.com\/da\/spark-plug-tester-everything-you-need-to-know\/\" target=\"_self\" rel=\"noopener\"><img decoding=\"async\" src=\"https:\/\/autoolstore.com\/wp-content\/uploads\/2024\/08\/autool-spt301-spark-tester-diagnostic.png\" alt=\"Spark Plug Tester Everything You Need to Know\"><\/a>\n        <div class=\"autool-guide-body\"><span class=\"autool-guide-date\">August 6, 2024<\/span><h3 class=\"autool-guide-title\"><a href=\"https:\/\/autoolstore.com\/da\/spark-plug-tester-everything-you-need-to-know\/\" target=\"_self\" rel=\"noopener\">Spark Plug Tester-Everything You Need to Know<\/a><\/h3><p class=\"autool-guide-copy\">Understand what a spark plug tester does, how spark strength comparison works, and when this type of diagnostic tool is worth buying.<\/p><\/div>\n      <\/article>\n      <article class=\"autool-guide-card\">\n        <a class=\"autool-guide-media\" href=\"https:\/\/autoolstore.com\/da\/why-are-spark-plugs-replaced-in-sets-of-four\/\" target=\"_self\" rel=\"noopener\"><img decoding=\"async\" src=\"https:\/\/autoolstore.com\/wp-content\/uploads\/2025\/02\/autool-spt301-spark-tester-diagnostic.png\" alt=\"Why Are Spark Plugs Replaced in Sets of Four\"><\/a>\n        <div class=\"autool-guide-body\"><span class=\"autool-guide-date\">February 26, 2025<\/span><h3 class=\"autool-guide-title\"><a href=\"https:\/\/autoolstore.com\/da\/why-are-spark-plugs-replaced-in-sets-of-four\/\" target=\"_self\" rel=\"noopener\">Why Are Spark Plugs Replaced in Sets of Four?<\/a><\/h3><p class=\"autool-guide-copy\">Learn why grouped replacement matters and how consistent plug performance affects comparison testing and ignition troubleshooting.<\/p><\/div>\n      <\/article>\n      <article class=\"autool-guide-card\">\n        <a class=\"autool-guide-media\" href=\"https:\/\/autoolstore.com\/da\/when-the-car-has-any-symptoms-it-means-that-the-spark-plug-should-be-replaced\/\" target=\"_self\" rel=\"noopener\"><img decoding=\"async\" src=\"https:\/\/autoolstore.com\/wp-content\/uploads\/2024\/08\/autool-spt301-spark-tester-diagnostic.png\" alt=\"When the car has any symptoms it means that the spark plug should be replaced\"><\/a>\n        <div class=\"autool-guide-body\"><span class=\"autool-guide-date\">July 9, 2021<\/span><h3 class=\"autool-guide-title\"><a href=\"https:\/\/autoolstore.com\/da\/when-the-car-has-any-symptoms-it-means-that-the-spark-plug-should-be-replaced\/\" target=\"_self\" rel=\"noopener\">When the car has any symptoms, it means that the spark plug should be replaced?<\/a><\/h3><p class=\"autool-guide-copy\">Use common misfire and performance symptoms as a quick reference when deciding whether to verify plugs with a spark tester.<\/p><\/div>\n      <\/article>\n      <article class=\"autool-guide-card\">\n        <a class=\"autool-guide-media\" href=\"https:\/\/autoolstore.com\/da\/car-maintenance-guide-everything-you-need-to-know\/\" target=\"_self\" rel=\"noopener\"><img decoding=\"async\" src=\"https:\/\/autoolstore.com\/wp-content\/uploads\/2025\/06\/autool-pt520-differential-pressure-gauge-digital.jpg\" alt=\"Car Maintenance Guide Everything You Need To Know\"><\/a>\n        <div class=\"autool-guide-body\"><span class=\"autool-guide-date\">October 23, 2024<\/span><h3 class=\"autool-guide-title\"><a href=\"https:\/\/autoolstore.com\/da\/car-maintenance-guide-everything-you-need-to-know\/\" target=\"_self\" rel=\"noopener\">Car Maintenance Guide: Everything You Need To Know<\/a><\/h3><p class=\"autool-guide-copy\">Review routine maintenance context around ignition health, replacement timing, and workshop inspection habits before spark plug diagnosis.<\/p><\/div>\n      <\/article>\n    <\/div>\n  <\/section>\n  <section id=\"autool-download\" class=\"autool-section autool-section-downloads\" data-autool-nav=\"Download\">\n    <div class=\"autool-section-head\">\n      <div class=\"autool-eyebrow\">Manual And Downloads<\/div>\n      <h2 class=\"autool-title\">Manual And Downloads<\/h2>\n      <p class=\"autool-lead\">Download the SPT301 manual for safety cautions, product structure, specifications, operating instructions, maintenance guidance, warranty access, and return or exchange information.<\/p>\n    <\/div>\n    <div class=\"autool-download-grid\">\n      <article class=\"autool-download-panel autool-download-main\">\n        <figure class=\"autool-download-media autool-manual-image\">\n          <img decoding=\"async\" src=\"https:\/\/autoolstore.com\/wp-content\/uploads\/autool-localized-resources\/2026-05-11\/images\/autool-spt301-spark-plug-tester-user-manual-preview.png\" alt=\"AUTOOL SPT301 spark plug tester user manual preview\" loading=\"lazy\">\n        \n        <span class=\"autool-media-hint\">Click to enlarge<\/span>\n      <\/figure>\n        <div class=\"autool-download-content\">\n          <h3 class=\"autool-card-title\">AUTOOL SPT301 Manual PDF<\/h3>\n          <p class=\"autool-card-copy\">Open the manual for SPT301 setup, warnings, operation, maintenance, and warranty details.<\/p>\n          <a class=\"autool-button autool-button-primary autool-download-button\" href=\"https:\/\/autoolstore.com\/wp-content\/uploads\/autool-localized-resources\/2026-05-11\/pdf\/f189f3c5099a6c685475aa5429945abcce5b28c5.pdf\" target=\"_blank\" rel=\"noopener\">Download Manual<\/a>\n        <\/div>\n      <\/article>\n      <article class=\"autool-download-panel autool-download-support\">\n        <h3 class=\"autool-card-title\">Need Setup Confirmation?<\/h3>\n        <p class=\"autool-card-copy\">Contact AUTOOL Store if you need to confirm input power, spark plug fitment, SPT101 \/ SPT105 \/ SPT301 \/ SPT360 model selection, safety cover use, or package contents before ordering.<\/p>\n        <div class=\"autool-contact-actions\">\n          <a class=\"autool-button autool-button-primary autool-contact-button\" href=\"mailto:support@autoolstore.com\"><span class=\"autool-button-kicker\">Email<\/span><span class=\"autool-button-value\">support@autoolstore.com<\/span><\/a>\n          <a class=\"autool-button autool-button-secondary autool-contact-button\" href=\"https:\/\/api.whatsapp.com\/send\/?phone=%2B8618926477404&amp;text=SPT301%20Support\" target=\"_blank\" rel=\"noopener\"><span class=\"autool-button-kicker\">WhatsApp<\/span><span class=\"autool-button-value\">+86 189 2647 7404<\/span><\/a>\n        <\/div>\n      <\/article>\n    <\/div>\n  <\/section>\n\n  <section id=\"autool-box\" class=\"autool-section autool-section-tonal autool-section-package autool-unbounded-media-panel autool-single-media-padding-parity autool-media-padding-parity\" data-autool-nav=\"Box\">\n    <div class=\"autool-split autool-split-media-left\">\n      <figure class=\"autool-media-card autool-single-image autool-package-media\">\n        <img decoding=\"async\" src=\"https:\/\/autoolstore.com\/wp-content\/uploads\/autool-localized-resources\/2026-05-11\/images\/autool-spt301-packing-list-showing-spark-plug-tester.png\" alt=\"AUTOOL SPT301 packing list showing spark plug tester retail box user manual and power adapter\" loading=\"lazy\">\n        <span class=\"autool-media-hint\">Click to enlarge<\/span>\n      <\/figure>\n      <div class=\"autool-copy-panel\">\n        <div class=\"autool-eyebrow\">What Is In The Box<\/div>\n        <h2 class=\"autool-title\">What Is In The Box<\/h2>\n        <p class=\"autool-lead\">The package image shows the SPT301 main unit, retail box, user manual, and power adapter. Spark plugs shown in function images are for testing demonstration and are not listed as included accessories.<\/p>\n        <div class=\"autool-detail-list\" aria-label=\"AUTOOL SPT301 package contents\">\n          <div class=\"autool-detail-item\"><span>Main Unit<\/span><strong>AUTOOL SPT301 spark plug tester<\/strong><\/div>\n          <div class=\"autool-detail-item\"><span>Power Adapter<\/span><strong>Included power adapter shown in the package image<\/strong><\/div>\n          <div class=\"autool-detail-item\"><span>Documentation<\/span><strong>AUTOOL SPT301 user manual<\/strong><\/div>\n          <div class=\"autool-detail-item\"><span>Retail Box<\/span><strong>AUTOOL SPT301 packaging box<\/strong><\/div>\n          <div class=\"autool-detail-item\"><span>Accessories<\/span><strong>Refer to the official package image for final included accessories<\/strong><\/div>\n        <\/div>\n      <\/div>\n    <\/div>\n  <\/section>\n\n  <section id=\"autool-faq-description\" class=\"autool-single-faq-section autool-product-section autool-description-faq autool-description-faq-spt301\" data-autool-nav=\"FAQ\">\n    <div class=\"autool-single-faq-inner\">\n      <h2 class=\"autool-single-section-title autool-single-faq-title\">Questions And Answers<\/h2>\n      <div class=\"autool-single-section-lead autool-single-faq-intro\">\n        <p>These answers cover spark plug compatibility, three-hole comparison, RPM adjustment, power input, safety cover use, model selection, package contents, and warranty support.<\/p>\n      <\/div>\n      <div class=\"autool-single-faq-list\" data-autool-faq-list>\n        <div class=\"autool-product-faq-item\">\n          <button class=\"autool-product-faq-q\" type=\"button\" id=\"autool-faq-description-item-1-q\" aria-expanded=\"false\" aria-controls=\"autool-faq-description-item-1-a\">\n            <span>What Spark Plugs Can SPT301 Test?<\/span><span class=\"autool-product-toggle\" aria-hidden=\"true\">+<\/span>\n          <\/button>\n          <div class=\"autool-product-faq-a\" id=\"autool-faq-description-item-1-a\" role=\"region\" aria-labelledby=\"autool-faq-description-item-1-q\" hidden>\n            <p>SPT301 is designed for common 12V automotive spark plug testing and motorcycle spark plug checks. It supports long spark plug testing and adjustable test hole height, but users should confirm fitment before testing unusual plug sizes or special structures.<\/p>\n          <\/div>\n        <\/div>\n\n        <div class=\"autool-product-faq-item\">\n          <button class=\"autool-product-faq-q\" type=\"button\" id=\"autool-faq-description-item-2-q\" aria-expanded=\"false\" aria-controls=\"autool-faq-description-item-2-a\">\n            <span>How Many Spark Plugs Can It Test At The Same Time?<\/span><span class=\"autool-product-toggle\" aria-hidden=\"true\">+<\/span>\n          <\/button>\n          <div class=\"autool-product-faq-a\" id=\"autool-faq-description-item-2-a\" role=\"region\" aria-labelledby=\"autool-faq-description-item-2-q\" hidden>\n            <p>SPT301 has three test positions. It can compare one standard or new spark plug with two spark plugs to be tested, helping users observe spark strength and performance differences more directly.<\/p>\n          <\/div>\n        <\/div>\n\n        <div class=\"autool-product-faq-item\">\n          <button class=\"autool-product-faq-q\" type=\"button\" id=\"autool-faq-description-item-3-q\" aria-expanded=\"false\" aria-controls=\"autool-faq-description-item-3-a\">\n            <span>Can The Simulated RPM Be Adjusted?<\/span><span class=\"autool-product-toggle\" aria-hidden=\"true\">+<\/span>\n          <\/button>\n          <div class=\"autool-product-faq-a\" id=\"autool-faq-description-item-3-a\" role=\"region\" aria-labelledby=\"autool-faq-description-item-3-q\" hidden>\n            <p>Yes. Use the \u201c+\u201d and \u201c-\u201d buttons to adjust the working frequency. SPT301 supports 200-9000 RPM simulation, and the digital display shows the simulated RPM during testing.<\/p>\n          <\/div>\n        <\/div>\n\n        <div class=\"autool-product-faq-item\">\n          <button class=\"autool-product-faq-q\" type=\"button\" id=\"autool-faq-description-item-4-q\" aria-expanded=\"false\" aria-controls=\"autool-faq-description-item-4-a\">\n            <span>What Power Supply Does SPT301 Use?<\/span><span class=\"autool-product-toggle\" aria-hidden=\"true\">+<\/span>\n          <\/button>\n          <div class=\"autool-product-faq-a\" id=\"autool-faq-description-item-4-a\" role=\"region\" aria-labelledby=\"autool-faq-description-item-4-q\" hidden>\n            <p>SPT301 uses AC 110V \/ 220V \u00b110% input power and DC12V output. Use the included power adapter shown in the package image and confirm local power compatibility before use.<\/p>\n          <\/div>\n        <\/div>\n\n        <div class=\"autool-product-faq-item\">\n          <button class=\"autool-product-faq-q\" type=\"button\" id=\"autool-faq-description-item-5-q\" aria-expanded=\"false\" aria-controls=\"autool-faq-description-item-5-a\">\n            <span>Do I Need To Close The Protective Cover Before Testing?<\/span><span class=\"autool-product-toggle\" aria-hidden=\"true\">+<\/span>\n          <\/button>\n          <div class=\"autool-product-faq-a\" id=\"autool-faq-description-item-5-a\" role=\"region\" aria-labelledby=\"autool-faq-description-item-5-q\" hidden>\n            <p>Yes. Close the protective cover before testing. The tester generates high-voltage sparks during operation, so do not touch the spark plug directly and do not insert or remove spark plugs while the power supply is connected.<\/p>\n          <\/div>\n        <\/div>\n\n        <div class=\"autool-product-faq-item\">\n          <button class=\"autool-product-faq-q\" type=\"button\" id=\"autool-faq-description-item-6-q\" aria-expanded=\"false\" aria-controls=\"autool-faq-description-item-6-a\">\n            <span>What Is The Difference Between SPT301 And SPT360?<\/span><span class=\"autool-product-toggle\" aria-hidden=\"true\">+<\/span>\n          <\/button>\n          <div class=\"autool-product-faq-a\" id=\"autool-faq-description-item-6-a\" role=\"region\" aria-labelledby=\"autool-faq-description-item-6-q\" hidden>\n            <p>SPT301 has three test hole positions and supports 200-9000 RPM, LCD digital backlit display, adjustable hole position height, and long spark plug testing. SPT360 has five test hole positions for users who need more comparison capacity.<\/p>\n          <\/div>\n        <\/div>\n\n        <div class=\"autool-product-faq-item\">\n          <button class=\"autool-product-faq-q\" type=\"button\" id=\"autool-faq-description-item-7-q\" aria-expanded=\"false\" aria-controls=\"autool-faq-description-item-7-a\">\n            <span>What Is Included In The Package?<\/span><span class=\"autool-product-toggle\" aria-hidden=\"true\">+<\/span>\n          <\/button>\n          <div class=\"autool-product-faq-a\" id=\"autool-faq-description-item-7-a\" role=\"region\" aria-labelledby=\"autool-faq-description-item-7-q\" hidden>\n            <p>The package image shows the SPT301 main unit, retail box, user manual, and power adapter. Refer to the official packing list image for the final package contents. Spark plugs shown in feature images are demonstration items and are not listed as included accessories.<\/p>\n          <\/div>\n        <\/div>\n\n        <div class=\"autool-product-faq-item\">\n          <button class=\"autool-product-faq-q\" type=\"button\" id=\"autool-faq-description-item-8-q\" aria-expanded=\"false\" aria-controls=\"autool-faq-description-item-8-a\">\n            <span>How Long Is The Warranty?<\/span><span class=\"autool-product-toggle\" aria-hidden=\"true\">+<\/span>\n          <\/button>\n          <div class=\"autool-product-faq-a\" id=\"autool-faq-description-item-8-a\" role=\"region\" aria-labelledby=\"autool-faq-description-item-8-q\" hidden>\n            <p>AUTOOL provides a three-year warranty for the main unit, and included accessories are covered by a one-year warranty according to the manual. Warranty service applies to eligible non-human damage cases and depends on the actual breakdown situation.<\/p>\n          <\/div>\n        <\/div>\n      <\/div>\n    <\/div>\n  <\/section>\n\n  <section id=\"autool-support\" class=\"autool-section autool-section-support\" data-autool-nav=\"Support\">\n    <div class=\"autool-section-head\">\n      <div class=\"autool-eyebrow\">Warranty And Contact<\/div>\n      <h2 class=\"autool-title\">Warranty And Contact<\/h2>\n      <p class=\"autool-lead\">For SPT301 setup, power input confirmation, spark plug compatibility, safety cover use, package contents, manual support, warranty service, or SPT101 \/ SPT105 \/ SPT301 \/ SPT360 model selection, contact AUTOOL Store directly.<\/p>\n    <\/div>\n    <div class=\"autool-support-panel\">\n      <div class=\"autool-support-copy\">\n        <h3>Pre-Sales And Product Support<\/h3>\n        <p>Use support if you need help confirming whether SPT301 is the right three-hole spark plug tester for your vehicle, workshop workflow, input power environment, or comparison testing needs.<\/p>\n        <ul class=\"autool-support-list\">\n          <li>SPT301 setup and safe-use confirmation<\/li>\n          <li>AC 110V \/ 220V power input questions<\/li>\n          <li>Common spark plug and long spark plug fitment support<\/li>\n          <li>SPT101 \/ SPT105 \/ SPT301 \/ SPT360 model selection<\/li>\n          <li>Packing list and accessory confirmation<\/li>\n          <li>Main unit warranty and accessory warranty support<\/li>\n        <\/ul>\n      <\/div>\n      <div class=\"autool-support-actions\">\n        <a class=\"autool-button autool-button-primary autool-contact-button\" href=\"mailto:support@autoolstore.com\"><span class=\"autool-button-kicker\">Email Support<\/span><span class=\"autool-button-value\">support@autoolstore.com<\/span><\/a>\n        <a class=\"autool-button autool-button-secondary autool-contact-button\" href=\"https:\/\/api.whatsapp.com\/send\/?phone=%2B8618926477404&amp;text=SPT301%20Support\" target=\"_blank\" rel=\"noopener\"><span class=\"autool-button-kicker\">WhatsApp Support<\/span><span class=\"autool-button-value\">+86 189 2647 7404<\/span><\/a>\n      <\/div>\n    <\/div>\n  <\/section>\n<\/div>","protected":false},"excerpt":{"rendered":"<ul>\n<li><strong>Three-Hole Test:<\/strong> The design supports testing two spark plugs plus one new plug for side-by-side comparison.<\/li>\n<li><strong>RPM Simulation:<\/strong> Simulated engine-speed testing up to 9000 rpm helps reveal spark behavior under more realistic conditions.<\/li>\n<li><strong>Digital RPM View:<\/strong> The digital screen shows simulated RPM so adjustments and comparisons are easier to track.<\/li>\n<\/ul>","protected":false},"featured_media":63553,"comment_status":"open","ping_status":"closed","template":"","meta":{"_gspb_post_css":""},"product_brand":[448],"product_cat":[1063,1070],"product_tag":[1037,940,939,1038,945,953],"hf_cat_product":[4542],"class_list":{"0":"post-43286","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_brand-autool","7":"product_cat-automotive-repair-testing-equipment","8":"product_cat-spark-plug-tester","9":"product_tag-best-seller","10":"product_tag-measurement-tools","11":"product_tag-multi-warehouse-shipping","12":"product_tag-new-arrival","13":"product_tag-voltage-options","14":"product_tag-workshop-diagnostic-tools","16":"first","17":"instock","18":"shipping-taxable","19":"purchasable","20":"product-type-variable","21":"has-default-attributes"},"meta_box":{"autool_archive_segment":"Electrical diagnostics","autool_primary_use_case":"Remote key signal, infrared and button-battery testing","autool_customer_focus":["measurement accuracy","voltage compatibility","warehouse \/ delivery location"],"autool_source_summary":"- Electrical Faults Faster: Puts voltage, polarity, continuity, and signal-check tasks first so users can shorten troubleshooting time. - Voltage Choice Is Visible: Clear voltage options help workshops avoid ordering a m","autool_model_family":"SPT301","autool_voltage_options":"110V\u3001220V","autool_ship_from_options":"Germany\u3001United States\u3001United Kingdom\u3001China","autool_package_options":"","autool_accessory_options":"","autool_data_confidence":"site-content-derived","autool_manual_review_notes":""},"_links":{"self":[{"href":"https:\/\/autoolstore.com\/da\/wp-json\/wp\/v2\/product\/43286","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/autoolstore.com\/da\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/autoolstore.com\/da\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/autoolstore.com\/da\/wp-json\/wp\/v2\/comments?post=43286"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/autoolstore.com\/da\/wp-json\/wp\/v2\/media\/63553"}],"wp:attachment":[{"href":"https:\/\/autoolstore.com\/da\/wp-json\/wp\/v2\/media?parent=43286"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/autoolstore.com\/da\/wp-json\/wp\/v2\/product_brand?post=43286"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/autoolstore.com\/da\/wp-json\/wp\/v2\/product_cat?post=43286"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/autoolstore.com\/da\/wp-json\/wp\/v2\/product_tag?post=43286"},{"taxonomy":"hf_cat_product","embeddable":true,"href":"https:\/\/autoolstore.com\/da\/wp-json\/wp\/v2\/hf_cat_product?post=43286"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}