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AUTOOL PT640 GDI Fuel Pressure Gauge 0-360Bar Digital Measurement Pressure Gauge
US$189.00
Key Features
- Digital Pressure Readout
- Multi-Unit Switch
- Backlit Display
- Digital Pressure Readout: The digital measurement system is described to provide wide-range, high-precision pressure readings.
- Multi-Unit Switch: Multiple unit switching helps buyers work in the pressure units they already use.
- Backlit Display: The 2.8-inch backlit screen improves readability when working in dim engine-bay conditions.
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AUTOOL PT640
Product Overview
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.
GDI Fuel Pressure
0-360bar
Data Holding
2.8" Backlit Screen
0-5221.3psiPressure Range
1% FSAccuracy
400barOverload
4×AAABattery
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Click to enlargeKey Features
Key Features
PT640 combines high-pressure digital measurement, unit switching, data holding, zeroing, and adapter support for GDI fuel pressure diagnosis.
Wide GDI Pressure Range
Measures 0-360bar / 0-5221.3psi / 0-367kg/cm², making it suitable for automotive direct injection fuel pressure testing.
Multi-Unit Switching
Supports bar, kg/cm², and Psi pressure units, allowing technicians to switch units according to diagnostic habits and service standards.
2.8-Inch Backlit Display
The 2.8-inch backlit display improves readability in low-light environments and clearly presents current pressure, maximum pressure, minimum pressure, and differential pressure.
Data Holding And Zeroing
Lock the data and interface for stable observation, then use clear / zeroing functions to reset data and pressure before or after measurement.
Digital Measurement System
The advanced digital measurement system provides wide-range pressure measurement with 1% FS accuracy and 0.1-unit resolution.
Adapters For Vehicle Connection
Adapter hoses, metal adapters, and T connector support connection to GDI fuel lines and direct injection test points.
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Click to enlargeSpecifications
PT640 Specifications
Review the confirmed PT640 measurement range, units, accuracy, resolution, battery requirement, operating temperature, overload pressure, and display functions before use.
| Product And Application | |
| Product | AUTOOL PT640 GDI Fuel Pressure Gauge |
| Application | GDI / direct injection fuel pressure testing |
| Test Target | Fuel injection pump pressure in automotive direct injection systems |
| Display | 2.8-inch backlit display screen |
| Measurement | |
| Pressure Range | 0-360bar / 0-5221.3psi / 0-367kg/cm² |
| Pressure Units | bar, kg/cm², Psi |
| Accuracy | 1% FS |
| Resolution | 0.1bar / 0.1kg/cm² / 0.1Psi |
| Overload Pressure | 400bar |
| Pressure Alarm | Alarm when pressure exceeds 355bar |
| Power And Functions | |
| Operating Voltage | 6V |
| Battery Type | 4 × 1.5V AAA batteries |
| Operating Temperature | -10°C to 60°C |
| Display Data | Current pressure, maximum pressure, minimum pressure, differential pressure, pressure unit, and measurement time |
| Controls | Power / language, unit switching, lock / unlock, clear / zero, backlight, and key sound |
| Warranty | 3-year warranty for eligible non-human damage cases and lifetime maintenance support |
| Product Structure | |
| Structure Overview | The PT640 structure image shows the display area, control buttons, measuring probe, battery cover, key sound control, backlight control, and compact 175mm × 72mm body size. |
| Display | Shows pressure data, unit, time, max / min values, and differential data. |
| Lock / Unlock | Locks the current data and interface for easier observation. |
| Clear / Zero | Clears stored data and performs pressure zeroing before measurement. |
| Unit / Power | Switches pressure units and controls power / language functions. |
Click to enlargeProduct And Application
ProductAUTOOL PT640 GDI Fuel Pressure Gauge
ApplicationGDI / direct injection fuel pressure testing
Test TargetFuel injection pump pressure in automotive direct injection systems
Display2.8-inch backlit display screen
Measurement
Pressure Range0-360bar / 0-5221.3psi / 0-367kg/cm²
Pressure Unitsbar, kg/cm², Psi
Accuracy1% FS
Resolution0.1bar / 0.1kg/cm² / 0.1Psi
Overload Pressure400bar
Pressure AlarmAlarm when pressure exceeds 355bar
Power And Functions
Operating Voltage6V
Battery Type4 × 1.5V AAA batteries
Operating Temperature-10°C to 60°C
Display DataCurrent pressure, maximum pressure, minimum pressure, differential pressure, pressure unit, and measurement time
ControlsPower / language, unit switching, lock / unlock, clear / zero, backlight, and key sound
Warranty3-year warranty for eligible non-human damage cases and lifetime maintenance support
Product Structure
Structure OverviewThe PT640 structure image shows the display area, control buttons, measuring probe, battery cover, key sound control, backlight control, and compact 175mm × 72mm body size.
DisplayShows pressure data, unit, time, max / min values, and differential data.
Lock / UnlockLocks the current data and interface for easier observation.
Clear / ZeroClears stored data and performs pressure zeroing before measurement.
Unit / PowerSwitches pressure units and controls power / language functions.
How To Use
How To Use
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.
Release Fuel Pressure
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.
Install Batteries
Open the rear battery cover and install 4 × 1.5V AAA batteries according to the positive and negative polarity marks.
Select Adapter
Choose the adapter suitable for the vehicle model and connect it to the measuring probe before connecting the pressure tester.
Connect To GDI Fuel Line
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.
Measure And Record
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.
Use Notes
- Release fuel pressure before installing the pressure tester.
- Use a towel or cotton cloth to catch residual fuel when removing the fuel pipe.
- Select the adapter suitable for the vehicle model before connection.
- The device alarms when pressure exceeds 355bar.
- Do not overload the equipment.
- After measurement, power off the device at atmospheric pressure when possible.
Click to enlargeWhat Is In The Box
What Is In The Box
The packing list image shows the most relevant PT640 package contents, including the main unit, carrying case, product box, user manual, adapter hoses, metal adapters, and T connector.
Main UnitAUTOOL PT640 GDI Fuel Pressure Gauge
StorageCarrying case and product box shown in package image
ManualPT640 user manual
AdaptersAdapter hoses, metal adapters, and T connector shown in package image
Power4 × AAA batteries required
Product Comparison
Product Comparison
PT640 is positioned as the GDI Fuel Pressure Gauge in the AUTOOL engine pressure tester lineup. Use the comparison chart to choose the right pressure tester for cylinder pressure, engine oil pressure, fuel pressure, GDI pressure, transmission oil pressure, or brake system pressure testing.
PT610Cylinder pressure gauge for cylinder pressure diagnosis
PT620Engine oil pressure gauge with digital display
PT635High-end fuel pressure gauge for broader fuel pressure service
PT640GDI fuel pressure gauge for direct injection fuel pump pressure, 0-360bar
PT650ATF exchanger / transmission oil pressure gauge
PT660Brake pressure gauge for brake system pressure testing
Click to enlargeRelated Products
Related Products
Compare related AUTOOL engine pressure tester tools before choosing the right gauge for cylinder, engine oil, fuel, GDI, transmission, or brake pressure testing.
- Select options This product has multiple variants. The options may be chosen on the product page
AUTOOL PT610 Cylinder Pressure Gauge Automotive Tool
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AUTOOL PT620 Engine Oil Pressure Gauge with Digital Display
From US$179.00 - Select options This product has multiple variants. The options may be chosen on the product page
AUTOOL PT635 Fuel Pressure Gauge(Hight-end Version) 0-426 PSI Digital Display Automotive Tool for Motorcycle Car Truck
From US$259.00 - Select options This product has multiple variants. The options may be chosen on the product page
AUTOOL PT650 ATF Exchanger Transmission Oil Pressure Gauge
From US$119.00 - Select options This product has multiple variants. The options may be chosen on the product page
AUTOOL PT660 Brake Pressure Gauge Pressure Gauge
From US$359.00
Manual And Downloads
Manual And Downloads
Download the correct AUTOOL PT640 GDI Fuel Pressure Gauge user manual. The original page contained a PT520 manual link in one location, so this section uses the PT640 manual PDF consistently.
Click to enlargeAUTOOL PT640 User Manual
Open the PT640 manual for specifications, fuel pressure release preparation, battery installation, adapter connection, unit switching, zeroing, and measurement guidance.
Download ManualNeed Setup Confirmation?
Contact AUTOOL Store before ordering if you need to confirm PT640 pressure range, GDI compatibility, adapter use, battery requirement, or pressure tester model selection.
Before You Order And Use
Before You Order And Use
PT640 is a high-pressure GDI fuel pressure tester. Review fuel pressure release, adapter selection, pressure range, unit support, alarm threshold, and storage notes before use.
Purchase And Use Notes
- PT640 is for GDI / direct injection fuel pressure testing.
- Pressure range: 0-360bar / 0-5221.3psi / 0-367kg/cm².
- Supported pressure units: bar, kg/cm², Psi.
- Use 4 × 1.5V AAA batteries.
- Release fuel pressure before installing the pressure tester.
- When removing the oil pipe, place a towel or cotton cloth under the oil pipe interface to prevent fuel from leaking onto the ground.
- Select the adapter suitable for the vehicle model before connecting.
- The device alarms when pressure exceeds 355bar.
- Do not overload the equipment.
- Store the product in a dry place when not in use.
Questions And Answers
These answers cover PT640 use cases, pressure range, pressure units, batteries, fuel pressure release, adapters, PT635 / PT640 differences, manual download, and support.
AUTOOL PT640 is used for GDI / direct injection fuel pressure testing. It is designed to measure fuel injection pump pressure in automotive direct injection systems.
PT640 supports a pressure range of 0-360bar / 0-5221.3psi / 0-367kg/cm². The overload pressure is 400bar, and the device alarms when pressure exceeds 355bar.
PT640 can display pressure in bar, kg/cm², and Psi. The unit button allows switching between these pressure units.
Unplug the fuel pump fuse, relay, or oil pump plug, then start the engine until it stalls. Start it again 2-3 times, then disconnect the negative battery terminal before connecting the tester.
PT640 uses 4 × 1.5V AAA batteries. Open the rear battery cover and install the batteries according to the positive and negative polarity marks.
PT635 is a high-end fuel pressure gauge for broader fuel pressure service. PT640 is specifically positioned as a GDI fuel pressure gauge for automotive direct injection system fuel pump pressure testing with a 0-360bar range.
The correct adapter helps connect the PT640 measuring probe securely to the vehicle’s direct injection fuel pipeline. Using an unsuitable adapter may affect sealing, measurement accuracy, or safe connection.
Yes. The PT640 user manual is included in the package image and can also be downloaded from the Download section of this description.
Warranty And Contact
Warranty And Contact
For PT640 product support, GDI compatibility, pressure range confirmation, adapter selection, manual support, warranty, or engine pressure tester model selection, contact AUTOOL Store directly.
Pre-Sales And Product Support
Use support if you need help confirming whether PT640 is suitable for your direct injection fuel system, choosing between PT610 / PT620 / PT635 / PT640 / PT650 / PT660, checking adapter use, or requesting manual and warranty support.
- 3-year warranty for eligible non-human damage cases
- Lifetime maintenance support
- GDI fuel pressure testing and pressure range confirmation
- Adapter and package content confirmation
- Manual request and engine pressure tester model selection
Customer Reviews
Leave A Review
Arlen Jerome (verified owner) –
The item arrived in a timely manner, well packaged, and was just as described.
The item arrived in a timely manner, well packaged, and was just as described. Great seller!
Donahue Wood (verified owner) –
PT640
The measurement range is wide, the readings are easy and clear, and the quality of the product is excellent!