Fuel Pressure: Testing and Inspection

FUEL PRESSURE

Work Procedure


FUEL PRESSURE RELEASE


1. FUEL PRESSURE RELEASE

With CONSULT
1.Turn ignition switch ON.
2.Perform "FUEL PRESSURE RELEASE" in "WORK SUPPORT" mode with CONSULT.
3.Start engine.
4.After engine stalls, crank it two or three times to release all fuel pressure.
5.Turn ignition switch OFF.
Without CONSULT
1.Remove fuel pump fuse located in IPDM E/R.
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


CAUTION:
- The fuel hose connection method used when taking fuel pressure check must not be used for other purposes.
- Before disconnecting fuel line, release fuel pressure from fuel line to eliminate danger.
- Be careful not to scratch or get the fuel hose connection area dirty when servicing, so that the quick connector o-ring maintains seal ability.
- Use Fuel Pressure Gauge Kit [SST: - (J-44321)] and Fuel Pressure Adapter [SST: - (J-44321-6)] to check fuel pressure.
NOTE:
Prepare pans or saucers under the disconnected fuel line because the fuel may spill out. The fuel pressure cannot be completely released because this models do not have fuel return system.

1. FUEL PRESSURE CHECK

1.Release fuel pressure to zero.
2.Remove fuel hose using Quick Connector Release [SST: - (J-45488)].

CAUTION:
- Do not twist or kink fuel hose because it is plastic hose.
- Do not remove fuel hose from quick connector.
- Keep fuel hose connections clean.





3.Install Fuel Pressure Adapter [SST: - (J-44321-6)] (B) and Fuel
Pressure Gauge kit [SST: - (J44321)] (A) as shown in figure.

CAUTION:
- Do not distort or bend fuel rail tube when installing fuel pressure gauge adapter.
- When reconnecting fuel hose, check the original fuel hose (1) for damage and abnormality.
4.Turn ignition switch ON (reactivate fuel pump) and check for fuel leakage.
5.Start engine and check for fuel leakage.
6.Read the indication of fuel pressure gauge kit [SST: - (J44321)].

CAUTION:
- During fuel pressure check, check for fuel leakage from fuel connection every 3 minutes.

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

Is the inspection result normal?
YES- INSPECTION END
NO- GO TO 2.

2. CHECK FUEL HOSES

Check the following.
- Fuel hoses and fuel tubes for clogging
- Fuel filter for clogging
- Fuel pump
- Fuel pressure regulator for clogging
Is the inspection result normal?
YES- Replace fuel pressure regulator.
NO- Repair or replace error-detected parts.

CAUTION:
Before disconnecting Fuel Pressure Gauge kit [SST: - (J-44321)] and Fuel Pressure Adapter [SST: (J-44321-6)], release fuel pressure to zero.