{"id":44054,"date":"2024-05-07T17:56:52","date_gmt":"2024-05-07T09:56:52","guid":{"rendered":"https:\/\/shop.autooltech.com\/?post_type=product&p=44054"},"modified":"2026-05-15T06:42:02","modified_gmt":"2026-05-15T13:42:02","slug":"autool-pt640-gdi-fuel-pressure-gauge","status":"publish","type":"product","link":"https:\/\/autoolstore.com\/bg\/product\/autool-pt640-gdi-fuel-pressure-gauge\/","title":{"rendered":"AUTOOL PT640 GDI Fuel Pressure Gauge 0-360Bar Digital Measurement Pressure Gauge"},"content":{"rendered":"
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AUTOOL PT640<\/div>\n

Product Overview<\/h2>\n

The AUTOOL PT640 GDI Fuel Pressure Gauge is a digital fuel pressure tester for automotive GDI \/ direct injection fuel systems. It helps technicians measure high-pressure fuel pump and fuel injection system pressure with a wide 0-360bar range, clear 2.8-inch backlit display, multiple pressure unit switching, real-time pressure display, maximum \/ minimum pressure tracking, differential pressure display, data lock, clear, and zeroing functions.<\/p>\n

\n GDI Fuel Pressure<\/span>\n 0-360bar<\/span>\n Data Holding<\/span>\n 2.8" Backlit Screen<\/span>\n <\/div>\n
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0-5221.3psi<\/span>Pressure Range<\/span><\/div>\n
1% FS<\/span>Accuracy<\/span><\/div>\n
400bar<\/span>Overload<\/span><\/div>\n
4\u00d7AAA<\/span>Battery<\/span><\/div>\n <\/div>\n <\/div>\n
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\"AUTOOL\n Click to enlarge<\/span>\n <\/figure>\n
\"AUTOOL\n Click to enlarge<\/span>\n <\/figure>\n <\/div>\n <\/div>\n <\/section>\n\n
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Key Features<\/div>\n

Key Features<\/h2>\n

PT640 combines high-pressure digital measurement, unit switching, data holding, zeroing, and adapter support for GDI fuel pressure diagnosis.<\/p>\n <\/div>\n

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Wide GDI Pressure Range<\/h3>

Measures 0-360bar \/ 0-5221.3psi \/ 0-367kg\/cm\u00b2, making it suitable for automotive direct injection fuel pressure testing.<\/p><\/article>\n

Multi-Unit Switching<\/h3>

Supports bar, kg\/cm\u00b2, and Psi pressure units, allowing technicians to switch units according to diagnostic habits and service standards.<\/p><\/article>\n

2.8-Inch Backlit Display<\/h3>

The 2.8-inch backlit display improves readability in low-light environments and clearly presents current pressure, maximum pressure, minimum pressure, and differential pressure.<\/p><\/article>\n

Data Holding And Zeroing<\/h3>

Lock the data and interface for stable observation, then use clear \/ zeroing functions to reset data and pressure before or after measurement.<\/p><\/article>\n

Digital Measurement System<\/h3>

The advanced digital measurement system provides wide-range pressure measurement with 1% FS accuracy and 0.1-unit resolution.<\/p><\/article>\n

Adapters For Vehicle Connection<\/h3>

Adapter hoses, metal adapters, and T connector support connection to GDI fuel lines and direct injection test points.<\/p><\/article>\n <\/div>\n

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\"AUTOOL\n Click to enlarge<\/span>\n <\/figure>\n
\"AUTOOL\n Click to enlarge<\/span>\n <\/figure>\n
\"AUTOOL\n Click to enlarge<\/span>\n <\/figure>\n
\"AUTOOL\n Click to enlarge<\/span>\n <\/figure>\n
\"AUTOOL\n Click to enlarge<\/span>\n <\/figure>\n
\"AUTOOL\n Click to enlarge<\/span>\n <\/figure>\n <\/div>\n <\/section>\n\n
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Specifications<\/div>

PT640 Specifications<\/h2>

Review the confirmed PT640 measurement range, units, accuracy, resolution, battery requirement, operating temperature, overload pressure, and display functions before use.<\/p><\/div>\n\n

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Product And Application<\/td><\/tr>\n
Product<\/td>AUTOOL PT640 GDI Fuel Pressure Gauge<\/td><\/tr>\n
Application<\/td>GDI \/ direct injection fuel pressure testing<\/td><\/tr>\n
Test Target<\/td>Fuel injection pump pressure in automotive direct injection systems<\/td><\/tr>\n
Display<\/td>2.8-inch backlit display screen<\/td><\/tr>\n
Measurement<\/td><\/tr>\n
Pressure Range<\/td>0-360bar \/ 0-5221.3psi \/ 0-367kg\/cm\u00b2<\/td><\/tr>\n
Pressure Units<\/td>bar, kg\/cm\u00b2, Psi<\/td><\/tr>\n
Accuracy<\/td>1% FS<\/td><\/tr>\n
Resolution<\/td>0.1bar \/ 0.1kg\/cm\u00b2 \/ 0.1Psi<\/td><\/tr>\n
Overload Pressure<\/td>400bar<\/td><\/tr>\n
Pressure Alarm<\/td>Alarm when pressure exceeds 355bar<\/td><\/tr>\n
Power And Functions<\/td><\/tr>\n
Operating Voltage<\/td>6V<\/td><\/tr>\n
Battery Type<\/td>4 \u00d7 1.5V AAA batteries<\/td><\/tr>\n
Operating Temperature<\/td>-10\u00b0C to 60\u00b0C<\/td><\/tr>\n
Display Data<\/td>Current pressure, maximum pressure, minimum pressure, differential pressure, pressure unit, and measurement time<\/td><\/tr>\n
Controls<\/td>Power \/ language, unit switching, lock \/ unlock, clear \/ zero, backlight, and key sound<\/td><\/tr>\n
Warranty<\/td>3-year warranty for eligible non-human damage cases and lifetime maintenance support<\/td><\/tr>\n \n
Product Structure<\/td><\/tr>\n \n
Structure Overview<\/td>The PT640 structure image shows the display area, control buttons, measuring probe, battery cover, key sound control, backlight control, and compact 175mm \u00d7 72mm body size.<\/td><\/tr>\n
Display<\/td>Shows pressure data, unit, time, max \/ min values, and differential data.<\/td><\/tr>\n
Lock \/ Unlock<\/td>Locks the current data and interface for easier observation.<\/td><\/tr>\n
Clear \/ Zero<\/td>Clears stored data and performs pressure zeroing before measurement.<\/td><\/tr>\n
Unit \/ Power<\/td>Switches pressure units and controls power \/ language functions.<\/td><\/tr>\n <\/tbody><\/table><\/div>\n
\"AUTOOLClick to enlarge<\/span><\/figure>\n <\/div>\n
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\n Product And Application<\/summary>\n
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Product<\/span>AUTOOL PT640 GDI Fuel Pressure Gauge<\/strong><\/div>\n
Application<\/span>GDI \/ direct injection fuel pressure testing<\/strong><\/div>\n
Test Target<\/span>Fuel injection pump pressure in automotive direct injection systems<\/strong><\/div>\n
Display<\/span>2.8-inch backlit display screen<\/strong><\/div>\n <\/div>\n <\/details>\n
\n Measurement<\/summary>\n
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Pressure Range<\/span>0-360bar \/ 0-5221.3psi \/ 0-367kg\/cm\u00b2<\/strong><\/div>\n
Pressure Units<\/span>bar, kg\/cm\u00b2, Psi<\/strong><\/div>\n
Accuracy<\/span>1% FS<\/strong><\/div>\n
Resolution<\/span>0.1bar \/ 0.1kg\/cm\u00b2 \/ 0.1Psi<\/strong><\/div>\n
Overload Pressure<\/span>400bar<\/strong><\/div>\n
Pressure Alarm<\/span>Alarm when pressure exceeds 355bar<\/strong><\/div>\n <\/div>\n <\/details>\n
\n Power And Functions<\/summary>\n
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Operating Voltage<\/span>6V<\/strong><\/div>\n
Battery Type<\/span>4 \u00d7 1.5V AAA batteries<\/strong><\/div>\n
Operating Temperature<\/span>-10\u00b0C to 60\u00b0C<\/strong><\/div>\n
Display Data<\/span>Current pressure, maximum pressure, minimum pressure, differential pressure, pressure unit, and measurement time<\/strong><\/div>\n
Controls<\/span>Power \/ language, unit switching, lock \/ unlock, clear \/ zero, backlight, and key sound<\/strong><\/div>\n
Warranty<\/span>3-year warranty for eligible non-human damage cases and lifetime maintenance support<\/strong><\/div>\n <\/div>\n <\/details>\n
\n Product Structure<\/summary>\n
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Structure Overview<\/span>The PT640 structure image shows the display area, control buttons, measuring probe, battery cover, key sound control, backlight control, and compact 175mm \u00d7 72mm body size.<\/strong><\/div>\n
Display<\/span>Shows pressure data, unit, time, max \/ min values, and differential data.<\/strong><\/div>\n
Lock \/ Unlock<\/span>Locks the current data and interface for easier observation.<\/strong><\/div>\n
Clear \/ Zero<\/span>Clears stored data and performs pressure zeroing before measurement.<\/strong><\/div>\n
Unit \/ Power<\/span>Switches pressure units and controls power \/ language functions.<\/strong><\/div>\n <\/div>\n <\/details>\n <\/div>\n <\/section>\n\n
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How To Use<\/div>

How To Use<\/h2>

Before connecting the PT640 to a direct injection fuel line, release fuel pressure, install batteries, select the correct adapter, and take precautions against residual fuel leakage.<\/p><\/div>\n

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Release Fuel Pressure<\/h3>

Unplug the fuel pump fuse, relay, or oil pump plug. Start the engine until it stalls, start it again 2-3 times, then disconnect the negative battery terminal.<\/p><\/article>\n

Install Batteries<\/h3>

Open the rear battery cover and install 4 \u00d7 1.5V AAA batteries according to the positive and negative polarity marks.<\/p><\/article>\n

Select Adapter<\/h3>

Choose the adapter suitable for the vehicle model and connect it to the measuring probe before connecting the pressure tester.<\/p><\/article>\n

Connect To GDI Fuel Line<\/h3>

Connect the device to the direct injection fuel pipeline. Place a towel or cotton cloth below the oil pipe interface when removing the oil pipe to prevent residual fuel from leaking onto the ground.<\/p><\/article>\n

Measure And Record<\/h3>

Long-press to power on, long-press zeroing, select the pressure unit, and start measurement. The device displays the fuel pressure value and related pressure data.<\/p><\/article>\n <\/div>\n

Use Notes<\/h3>