Fuel Pressure: Testing and Inspection

Fuel Pressure Hold Inspection

1. Disconnect negative battery terminal.

CAUTION: The fuel system remains underpressure when the engine is not running. Release fuel system pressure before disconnecting any fuel line to reduce the chance of personal injury or fire damage to vehicle components.

2. Release fuel system pressure.
3. Raise a vehicle.




4. Install SST (OK2A1 131 001 A) to fuel filter as described below.

5. Connect negative battery terminal.
6. Connect data link connector terminals FUEL PUMP and B+ with jumper wire.
7. Turn ignition switch ON for 10 seconds to operate fuel pump.
8. Turn ignition switch OFF and remove jumper wire.

9. Inspect fuel pressure after 25 minutes.

Fuel pressure:
More than 25 psi (180 kPa, 1.8 kg/sq.cm)

10. If not as specified, check the following components: do following inspections:
- Fuel pump
- Pressure regulator
- Injectors