{"id":59458,"date":"2025-08-25T06:18:55","date_gmt":"2025-08-25T06:18:55","guid":{"rendered":"https:\/\/shop.autooltech.com\/?post_type=product&p=59458"},"modified":"2026-05-15T06:42:02","modified_gmt":"2026-05-15T13:42:02","slug":"autool-walnut-blasting-machine-for-intake-valve-carbon-cleaning","status":"publish","type":"product","link":"https:\/\/autoolstore.com\/de\/product\/autool-walnut-blasting-machine-for-intake-valve-carbon-cleaning\/","title":{"rendered":"AUTOOL Walnut Blasting Machine for Intake Valve Carbon Cleaning"},"content":{"rendered":"
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AUTOOL HTS Series<\/div>\n

Product Overview<\/h2>\n

The AUTOOL HTS walnut blaster series is designed for professional engine carbon cleaning with walnut shell media. It helps remove stubborn carbon deposits from intake ports, intake valves, exhaust valves, and supported target areas without relying on chemical cleaners. Choose the model by cleaning scope, HEPA filtration, pressure adjustment, media size, adapter coverage, and workshop workflow.<\/p>\n

\n Walnut Blasting<\/span>\n Intake Valve Cleaning<\/span>\n External Air Source<\/span>\n Model-Based Functions<\/span>\n <\/div>\n
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HTS558 \/ HTS559<\/span>Standard Cleaning<\/span><\/div>\n
HTS518<\/span>Storage Box Model<\/span><\/div>\n
HTS678<\/span>HEPA + Pressure<\/span><\/div>\n
HTS728<\/span>Combustion Chamber<\/span><\/div>\n <\/div>\n <\/div>\n
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\n \"AUTOOL\n \n Click to enlarge<\/span>\n <\/figure>\n
\n \"AUTOOL\n \n Click to enlarge<\/span>\n <\/figure>\n
\n \"AUTOOL\n \n Click to enlarge<\/span>\n <\/figure>\n <\/div>\n <\/div>\n <\/section>\n\n
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How To Choose<\/div>\n

How To Choose<\/h2>\n

Start with the cleaning area first, then check HEPA filtration, pressure control, air compressor setup, walnut shell media size, and adapter coverage before choosing your model.<\/p>\n <\/div>\n

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Need Standard Intake And Valve Cleaning?<\/h3>\n

Choose HTS558, HTS559, or HTS518 for intake manifold, intake port, and intake \/ exhaust valve carbon cleaning. These models are suitable for common walnut blasting workflows and do not support combustion chamber cleaning.<\/p>\n <\/article>\n

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Need HEPA And Pressure Control?<\/h3>\n

Choose HTS678 if you need HEPA filtration, a pressure gauge, pressure adjustment, a storage box, 23 connector types, and standard \/ expert mode selection for workshop use.<\/p>\n <\/article>\n

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Need Combustion Chamber Cleaning?<\/h3>\n

Choose HTS728. It is the expert-grade model in this series and the only model listed here that supports engine combustion chamber carbon cleaning.<\/p>\n <\/article>\n

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Need The Right Walnut Media?<\/h3>\n

HTS558, HTS559, HTS518, and HTS678 use 0.6-1.2mm walnut shell abrasive. HTS728 uses finer 0.4-0.6mm walnut shell abrasive for more precise cleaning.<\/p>\n <\/article>\n

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Need A Stable Air Source?<\/h3>\n

All models require an external air compressor. Use a suitable compressor according to the model manual; many setups use around 0.6-0.7MPa \/ 6-7bar. A dryer filter is recommended to reduce moisture and media clumping.<\/p>\n <\/article>\n

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Need More Adapters Or Storage?<\/h3>\n

HTS518 and HTS678 include 23 connector types and a storage box. HTS558, HTS559, and HTS728 list 5 connector types, so confirm adapter needs before ordering.<\/p>\n <\/article>\n <\/div>\n <\/section>\n\n

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Product Comparison<\/div>\n

Product Comparison<\/h2>\n

Compare the HTS558, HTS559, HTS518, HTS678, and HTS728 before choosing the right cleaning range, filtration, pressure control, media size, connector set, storage design, and workflow mode.<\/p>\n

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HTS558 \/ HTS559<\/span>Standard walnut blasting models for intake and valve carbon cleaning. They use 0.6-1.2mm media, have a built-in dust filter, 360\u00b0 swivel casters, and no pressure gauge or pressure adjustment.<\/strong><\/div>\n
HTS518<\/span>Uses 0.6-1.2mm media, includes 23 connector types, has a storage box, supports high \/ low mode and low-speed mode, and does not include a pressure gauge or pressure adjustment.<\/strong><\/div>\n
HTS678<\/span>Recommended when HEPA filtration, pressure adjustment, pressure gauge monitoring, 23 connector types, storage box, and standard \/ expert mode are required.<\/strong><\/div>\n
HTS728<\/span>Expert-grade model with HEPA filtration, pressure adjustment, pressure gauge, recovery \/ filling mode, finer 0.4-0.6mm media, and combustion chamber cleaning support.<\/strong><\/div>\n
Decision Check<\/span>Compare combustion chamber cleaning, HEPA filtration, pressure gauge, pressure settings, connector quantity, media size, main unit capacity, weight, mode switch, and air compressor setup before ordering.<\/strong><\/div>\n <\/div>\n <\/div>\n
\n \"Comparison\n Click to enlarge<\/span>\n <\/figure>\n <\/div>\n <\/section>\n\n
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Specifications<\/div>\n

Specifications<\/h2>\n

Use this compact summary to check the main differences without reading the full comparison image. Do not treat higher-end functions as standard for the whole series.<\/p>\n <\/div>\n

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Model<\/th>\n Power \/ Capacity \/ Weight<\/th>\n Media Size<\/th>\n Connectors \/ Storage<\/th>\n Pressure \/ Mode \/ HEPA<\/th>\n Combustion Chamber<\/th>\n <\/tr>\n <\/thead>\n
HTS558<\/td>\n 1200W \/ 13L \/ 10kg<\/td>\n 0.6-1.2mm<\/td>\n 5 types \/ No storage box<\/td>\n No pressure gauge, no pressure setting, built-in dust filter, no HEPA<\/td>\n No<\/td>\n <\/tr>\n
HTS559<\/td>\n 1400W \/ 30L \/ 12kg<\/td>\n 0.6-1.2mm<\/td>\n 5 types \/ No storage box<\/td>\n No pressure gauge, no pressure setting, built-in dust filter, no HEPA<\/td>\n No<\/td>\n <\/tr>\n
HTS518<\/td>\n 1400W \/ 30L \/ 23.5kg<\/td>\n 0.6-1.2mm<\/td>\n 23 types \/ Storage box<\/td>\n No pressure gauge, high \/ low mode and low-speed mode, built-in dust filter, no HEPA<\/td>\n No<\/td>\n <\/tr>\n
HTS678<\/td>\n 1800W \/ 10L \/ 52kg<\/td>\n 0.6-1.2mm<\/td>\n 23 types \/ Storage box<\/td>\n Pressure gauge, pressure regulation knob, standard \/ expert mode, built-in dust filter, HEPA filter<\/td>\n No<\/td>\n <\/tr>\n
HTS728<\/td>\n 1400W \/ 10L \/ 50kg<\/td>\n 0.4-0.6mm<\/td>\n 5 types \/ No storage box<\/td>\n Pressure gauge, pressure regulation knob, recovery \/ filling mode, built-in dust filter, HEPA filter<\/td>\n Yes<\/td>\n <\/tr>\n <\/tbody>\n <\/table>\n <\/div>\n
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\n HTS558 \/ HTS559<\/summary>\n
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Focus<\/span>Standard intake and valve carbon cleaning<\/strong><\/div>\n
Media<\/span>0.6-1.2mm walnut shell abrasive<\/strong><\/div>\n
Pressure Control<\/span>No pressure gauge or pressure adjustment<\/strong><\/div>\n
HEPA<\/span>Not supported<\/strong><\/div>\n <\/div>\n <\/details>\n
\n HTS518 \/ HTS678<\/summary>\n
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Connectors<\/span>23 types<\/strong><\/div>\n
Storage Box<\/span>Supported<\/strong><\/div>\n
Pressure Control<\/span>HTS678 supports pressure gauge and pressure regulation knob; HTS518 does not<\/strong><\/div>\n
HEPA<\/span>HTS678 supports HEPA; HTS518 does not<\/strong><\/div>\n <\/div>\n <\/details>\n
\n HTS728<\/summary>\n
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Focus<\/span>Expert-grade carbon cleaning and combustion chamber support<\/strong><\/div>\n
Media<\/span>0.4-0.6mm walnut shell abrasive<\/strong><\/div>\n
Pressure Control<\/span>Pressure gauge and pressure regulation knob<\/strong><\/div>\n
Mode<\/span>Recovery mode and filling mode<\/strong><\/div>\n <\/div>\n <\/details>\n <\/div>\n <\/section>\n\n
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How It Works<\/div>\n

How It Works<\/h2>\n

AUTOOL walnut shell blasters use compressed air to move walnut shell abrasive into the target cleaning area. The particles impact carbon deposits, while the connector and suction pipe recover loosened carbon and used walnut media into the storage tank. Combustion chamber cleaning applies to HTS728 only.<\/p>\n <\/div>\n

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Compressed Air Blasting<\/h3>\n

An external air compressor drives walnut shell media at high speed through the blasting nozzle into the intake port, valve area, or supported target area.<\/p>\n <\/article>\n

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Carbon Deposit Impact<\/h3>\n

Walnut particles tumble and impact carbon deposits, helping remove buildup without relying on chemical cleaning and while reducing the risk of damaging sensitive engine surfaces.<\/p>\n <\/article>\n

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Simultaneous Recovery<\/h3>\n

The connector and suction pipe recover walnut shell abrasive and loosened carbon deposits into the machine, supporting cleaner operation and media reuse.<\/p>\n <\/article>\n <\/div>\n <\/section>\n\n

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Key Features<\/div>\n

Key Features<\/h2>\n

The HTS series focuses on professional carbon cleaning, adapter compatibility, external air source blasting, media recovery, workshop mobility, and model-based upgrades such as HEPA filtration, pressure adjustment, and combustion chamber support.<\/p>\n <\/div>\n

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Intake And Valve Carbon Cleaning<\/h3>\n

Helps remove stubborn carbon deposits from intake manifolds, intake ports, intake valves, and exhaust valves according to the proper port-by-port cleaning sequence.<\/p>\n <\/article>\n

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HTS728 Combustion Chamber Support<\/h3>\n

HTS728 supports combustion chamber carbon cleaning. This function is not supported by HTS558, HTS559, HTS518, or HTS678.<\/p>\n <\/article>\n

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Multiple Intake Adapters<\/h3>\n

Different models include different connector quantities. HTS518 and HTS678 list 23 connector types, while HTS558, HTS559, and HTS728 list 5 connector types.<\/p>\n <\/article>\n

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External Air Source Power<\/h3>\n

The series uses an external air compressor to provide the blasting air source for consistent walnut shell abrasive impact during carbon cleaning.<\/p>\n <\/article>\n

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Dust Filter And Media Recovery<\/h3>\n

Built-in dust filtering and recovery help separate walnut shell abrasive from carbon deposits, allowing suitable media to be recycled and reused.<\/p>\n <\/article>\n

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Workshop Mobility And Support<\/h3>\n

The HTS models include 360\u00b0 swivel casters for workshop movement and are backed by 3-year warranty support for eligible non-human damage cases.<\/p>\n <\/article>\n <\/div>\n <\/section>\n\n

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Product Details<\/div>\n

Product Details<\/h2>\n

Walnut blasting performance depends on the correct media size, enough media loading, dry compressed air, and clean recovery. Use the correct media for each model and avoid moisture buildup.<\/p>\n <\/div>\n

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Walnut Media Size<\/h3>\n

HTS558, HTS559, HTS518, and HTS678 use 0.6-1.2mm walnut shell abrasive. HTS728 uses 0.4-0.6mm walnut shell abrasive.<\/p>\n <\/article>\n

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Media Loading<\/h3>\n

The walnut blaster requires about 2-3kg of walnut shell media to start operation. Do not run the cleaning process without enough media in the machine.<\/p>\n <\/article>\n

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Media Reuse<\/h3>\n

Walnut media can usually be recycled and reused approximately 5-10 times depending on contamination, breakage, and recovery condition.<\/p>\n <\/article>\n

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Dry Air Recommended<\/h3>\n

Use a dryer filter with the air compressor to reduce moisture buildup, walnut media clumping, nozzle blockage, and poor blasting performance.<\/p>\n <\/article>\n <\/div>\n <\/section>\n\n

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Before You Order And Use<\/div>\n

Before You Order And Use<\/h2>\n

Walnut blasting is effective for carbon cleaning, but valve position, port-by-port operation, compressed air quality, and application boundaries must be handled correctly before restarting the engine.<\/p>\n <\/div>\n

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Close Intake Valves Before Cleaning<\/h3>\n

High-precision engine systems are sensitive to foreign particles in the intake manifold, including BMW Valvetronic systems. Turn off the engine and rotate the crankshaft to close the intake valves before cleaning each port.<\/p>\n <\/article>\n

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Clean One Intake Port At A Time<\/h3>\n

The walnut sandblaster cleans one intake port at a time. For example, a six-cylinder engine requires each of the six intake ports to be cleaned individually.<\/p>\n <\/article>\n

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External Air Compressor Required<\/h3>\n

The package does not include an air compressor. Use a suitable external compressor and add a dryer filter to reduce moisture, clumping, and unstable blasting.<\/p>\n <\/article>\n

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Do Not Use For Car Chassis<\/h3>\n

Walnut sand blasting machines are not suitable for cleaning car chassis. Use a dry ice cleaning machine for chassis cleaning instead.<\/p>\n <\/article>\n <\/div>\n

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Additional Notes<\/h3>\n