Autool PT630 | Fuel Pressure Tester
Warranty directly via AsTools
Warranty directly via AsTools
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2 years warranty on all products
2 years warranty on all products
All our products come with a 2-year factory warranty. This ensures you long-lasting quality and service.
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Easy returns
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Professional customer service
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The Autool PT630 is a digital fuel pressure gauge with a measurement range of 0 to 29.4 bar. The PT630 measures fuel pressure in the line, covering the range from a conventional injection system up to 29.4 bar. What sets it apart is the breadth of the adapter set: In addition to individual threaded adapters, it includes stepped nipples and hose couplings, so you can bridge different sizes.
The device reads digitally and holds the highest and lowest values during measurement, along with the difference between them and the duration of the test. Connection is made using the supplied adapters: comprehensive set of adapters, reducing nipples and hose couplings. Including M14×1.5, M12×1.5, M12×1.25, M10×1.0, M8×1.0, M6×1.0 and 1/4″-19, with reducing nipples between them, an oil-resistant transfer hose and hose couplings of 7.89 and 9.49 mm; all fabricated from riveted copper.
KEY BENEFITS
POINTS TO NOTE
Application and functionality
When diagnosing starting problems or power loss, fuel pressure is one of the first things to rule out. The PT630 is inserted into the fuel line and measures what the pump actually delivers: system pressure with the engine running, and the residual pressure after you switch off the engine. That second reading reveals a leaking injector or faulty check valve.
Because part of the answer lies in the pressure trace, the tester records more than just the current value:
- Live reading: The pressure at that moment.
- Highest and lowest values: Pmax and Pmin are held throughout the measurement.
- Difference between them: ΔP, the difference between the highest and lowest value.
- Measurement time: How long the measurement has been running.
- Stepped nipples: From M14 to M12, from M12 to M8 and beyond, so you can bridge a different size.
- Hose couplings: For lines of 7.89 and 9.49 mm, with an oil-resistant transfer hose.
Where to connect it
The fuel line. You insert the tester into the line, using the coupling or thread that suits the system.
Where to use it
This measurement applies to faults where fuel supply is in question:
- Hard starting or stalling: Whether the pump builds system pressure when switched on.
- Power loss under load: Whether pressure drops when more fuel is demanded.
- Pressure drops after switch-off: A sign pointing towards a leaking injector or faulty check valve.
- After replacing pump or filter: Confirmation that the new component delivers what it should.
Which pressure gauge you need
Autool offers seven pressure gauges that look similar on the outside but have different sensors and different adapter sets. The difference lies in which system you are measuring and how high the pressure goes in that system. You are currently viewing the PT630.
| Model | What it measures | Range | Adapters |
|---|---|---|---|
| PT520 | Air pressure and vacuum | −100 to +200 kPa | Seven adapter types |
| PT530 | Air pressure and vacuum | −100 to +300 kPa | Seven adapter types, with sizes from 4 to 20 mm |
| PT610 | Compression pressure of a petrol engine | 0 to 29.4 bar | Ten adapter types |
| PT620 | Engine oil pressure | 0 to 29.4 bar | Eighteen adapter types |
| PT630 (this product) | Fuel pressure in the low-pressure line | 0 to 29.4 bar | Comprehensive set with tapered nipples and hose couplings |
| PT640 GDI | Fuel pressure in a direct injection system | 0 to 360 bar | Three adapter types |
| PT650 | Oil pressure in an automatic transmission | 0 to 29.4 bar | Twelve adapter types |
Package contents
- 1x Autool PT630 fuel pressure tester
- 1x Adapter set: Comprehensive set of adapters, adapter nipples and hose couplings
- 1x User manual
Technical specifications
| Specification | Description |
|---|---|
| Brand | Autool |
| Model | PT630 |
| Type | Fuel pressure tester |
| Measurement range | 0 to 29.4 bar (426.6 psi / 30 kg/cm²) |
| Accuracy | 0.5% of full scale |
| Resolution | 0.01 bar |
| Overload limit | 40 bar |
| Display | Digital display |
| Adapters | Comprehensive set of adapters, adapter nipples and hose couplings |
| Power supply | Four AAA batteries of 1.5 V |
| Operating temperature | −10 °C to +60 °C |
| Dimensions | 175 × 72 × 29 mm |
| Auto shut-off | After five minutes |
| Article number | PT630 |
