Fuel Injector: Service and Repair
REMOVE1. Depressurize fuel system. Fuel Pressure Release
2. Disconnect battery ground terminal.
3. Remove plenum chamber.
4. Remove ram housing.
NOTE: Place cloth over ram tube openings to prevent ingress of dirt.
Fuel Rail:
5. Release hose clamp and remove fuel return hose from fuel pressure regulator.
6. Disconnect multi-plug from engine fuel temperature sensor.
7. Disconnect multi-plugs from injectors.
8. Remove five bolts securing fuel rail support brackets to intake manifold. Lay heater pipes to one side.
Fuel Rail:
9. Remove fuel rail and injectors.
10. Remove injector retaining clips, ease injectors from rail.
11. Remove fuel pressure regulator if required.
REFIT
1. Fit NEW O-rings to injectors. Lightly coat )-rings with silicone grease 300 or equivalent. Insert injectors into fuel rail, multi-plug connections facing outwards.
2. Refit retaining clips.
CAUTION: Care must be taken when refitting the fuel rail and injectors to intake manifold to prevent damage to O-rings.
3. Fit a NEW O-ring to fuel pressure regulator lightly coat O-ring with silicon grease 300 or equivalent, and secure regulator to the fuel rail.
4. Fit fuel rail and heater pipe assemblies to intake manifold. Secure rail and pipes in position with five bolts.
5. Reverse removal instructions 2 to 7.
6. Pressurize fuel system and check for fuel leaks around injectors and fuel pressure regulator.