Fuel Pressure: Testing and Inspection

FUEL PRESSURE CHECK


Work Procedure


FUEL PRESSURE RELEASE
1.FUEL PRESSURE RELEASE
With CONSULT-III
1. Turn ignition switch ON.
2. Select ENGINE using CONSULT-III.
3. Perform "FUEL PRESSURE RELEASE" in "WORK SUPPORT" mode.
4. Start engine.
5. After engine stalls, crank it two or three times to release all fuel pressure.
6. Turn ignition switch OFF.
Without CONSULT-III





1. Remove fuel pump fuse (1) located in IPDM E/R (2).
2. Start engine.
3. After engine stalls, crank it two or three times to release all fuel pressure.
4. Turn ignition switch OFF.
5. Reinstall fuel pump fuse after servicing fuel system.
- INSPECTION END

FUEL PRESSURE CHECK
1.FUEL PRESSURE CHECK
1. Release fuel pressure to zero.





2. Install the inline fuel quick disconnected fitting (A) between fuel damper (1) and injector tube.

CAUTION:
Before disconnecting fuel line, release fuel pressure from fuel line to eliminate danger.

NOTE:
- Prepare pans or saucers under the disconnected fuel line because the fuel may spill out. The fuel pressure cannot be completely released because Y51 models do not have fuel return system.
- Use Fuel Pressure Gauge Kit (J-44321) to check fuel pressure.
3. Connect pressure gauge (B) to fuel pressure check adapter.
4. Turn ignition switch ON and check for fuel leakage.
5. Start engine and check for fuel leakage.
6. Read the indication of fuel pressure gauge.

At idling : Approximately 350 kPa (3.5 bar, 3.57 kg/cm2, 51 psi)

Is the inspection result normal?
YES - INSPECTION END
NO - GO TO 2.
2.CHECK FUEL HOSE AND FUEL TUBE
If result is unsatisfactory, check fuel hoses and fuel tubes for clogging.
Is the inspection result normal?
YES - Replace "fuel filter and fuel pump assembly".
NO - Repair or replace.