Fuel Pressure Regulator: Testing and Inspection

PRESSURE REGULATOR
Operational Inspection

Warning: Fuel line spills and leaks are dangerous. Fuel can ignite and cause serious injuries or death and damage. Fuel can also irritate skin and eyes. To prevent this, always complete the "Fuel Line Safety Procedures".

1. Disconnect the negative battery cable.




2. Connect a fuel pressure gauge between the fuel filter (high-pressure side) and the main fuel hose. Install clamps as shown in the figure above.
3. Connect the negative battery cable.
4. Start the engine and let it idle.
5. Carry out the intake-air system inspection.
Testing and Inspection
6. Measure the fuel line pressure.

Specification: 210-330 kPa (3O-48 psi)

7. If not as specified, carry out the fuel system inspection. Refer to Fuel Pressure: Testing and Inspection




8. Disconnect the vacuum hose from the pressure regulator.
9. Measure the fuel line pressure.

Specification: 280-330 kPa (41-48 psi)

10. If not as specified, replace the pressure regulator.