AUTOOL PT640 · 0–360 Bar GDI Pressure Tester
Measure Direct-Injection Pressure Digitally
Measure GDI and direct-injection fuel pressure digitally at a verified high-pressure test point. PT640 covers 0–360 bar and tracks current, maximum, minimum, and differential pressure on its backlit display. Three selectable units and the supplied hose-and-fitting set help match compatible service procedures without mechanical-gauge interpretation.
- 0–360 Bar GDI Range
- Stated 1% FS Accuracy
- Current / Max / Min / Differential
- Three Pressure Units
- GDI Hose And Adapter Set
Key Features
High-Pressure Range with GDI Fuel Adapters
Wide GDI Pressure Range
Measures 0-360bar / 0-5221.3psi / 0-367kg/cm², making it suitable for automotive direct injection fuel pressure testing. Use only the verified GDI-rated hose/adapter after the specified depressurization procedure; this 0–360 bar path does not authorize diesel common-rail connection.
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
Use the verified GDI-rated hose and adapter only after the specified depressurization procedure. The 0–360 bar test path is for supported GDI fuel systems, not diesel common-rail systems.
AAA Battery Power
PT640 uses 4 × 1.5V AAA batteries. Open the rear battery cover and install the batteries according to the positive and negative polarity marks.
3 Years Warranty Support
Main unit: 3-year warranty. Standard accessories: 1-year warranty. Warranty Policy.
Safe Use
Treat GDI Pressure as High-Energy Work
Interpret GDI Fuel Pressure Results in Context
Keep PT640 to the stated gasoline direct-injection path and verified 0–360 bar sensor/adapter set. Do not extend it to diesel common rail or infer safe access from display range alone.
Prevent Spills and Store Dry
When removing the oil pipe, place a towel or cotton cloth under the interface to prevent fuel from reaching the ground. Store the product in a dry place when not in use.
Specifications
PT640 GDI Fuel Pressure Gauge Specifications
| Measurement & Readout | |
|---|---|
| Display Screen | 2.8-inch |
| Pressure Range | 0-5221.3psi0-367kg/cm²0-360bar |
| Data Lock/Clear/Record | Yes |
| Multi-Parameter Display | Maximum ValueMinimum ValueDifferential Pressure ValueMeasurement TimeReal-Time Pressure Value |
| Pressure Units | PsiBarKg/cm² |
| Connections & Applications | |
| Accessory Connectors | 3 Types |
| Equipped Toolbox | Yes |
| Applicable Scenarios | Fuel Injection Pump Pressure in the Automotive Direct Injection System |
Manual & Support
Find the Manual and Adapter Guidance
AUTOOL PT640 User Manual
Open the PDF manual for AUTOOL PT640 GDI pressure testing, unit selection, vehicle adapter setup, data hold and zeroing, safe depressurization and troubleshooting support.
Package Contents
See What Comes in the Box
- Main UnitAUTOOL PT640 GDI Fuel Pressure Gauge
- StorageCarrying case and product box
- ItemManual PT640 user manual
- AdaptersAdapter hoses, metal adapters, and T connector
- ItemPower 4 × AAA batteries required
Buyer Questions
Pressure Connection and Reading Questions
What Is AUTOOL PT640 Used For?
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.
What Pressure Range Does PT640 Support?
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.
Which Pressure Units Can PT640 Display?
PT640 can display pressure in bar, kg/cm², and Psi. The unit button allows switching between these pressure units.
How Do I Release Fuel Pressure Before Testing?
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.
What Batteries Does PT640 Use?
PT640 uses 4 × 1.5V AAA batteries. Open the rear battery cover and install the batteries according to the positive and negative polarity marks.
What Is The Difference Between PT635 And PT640?
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.
Why Should I Use The Correct Adapter?
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.
Does PT640 Include A Manual?
Yes. The PT640 user manual is included in the package image and can also be downloaded from the Download section of this description.
