Fuel Injector: Service and Repair
TOOLS REQUIRED^ J 34730 Fuel Pressure Gauge
^ J 43013 Fuel Injector Removal Tool/Battery
REMOVAL PROCEDURE
IMPORTANT: The fuel injector is serviced as a complete assembly only. If the fuel injectors are found to be leaking, the engine oil may be contaminated with fuel.
1. Relieve the fuel pressure. Refer to Fuel Pressure Relief Procedure. Service and Repair
2. Remove the fuel injector electrical connector from the fuel injector.
IMPORTANT: It may be necessary to remove the fuel rail from the intake manifold to allow increased fuel rail movement for injector access.
3. Remove the fuel rail from the intake manifold.
4. Remove the fuel injector up out of intake manifold using J 43013 fuel injector removal tool/battery between the bottom of injector and intake manifold.
IMPORTANT: It may be necessary to release the adjacent injector from the intake manifold to allow increased fuel rail movement for injector access.
5. Spread the injector retainer clip to release injector from fuel rail.
6. Remove the fuel injector assembly.
7. Remove the fuel injector upper O-ring (3).
8. Remove the fuel injector lower O-ring (2).
9. Discard the injector O-ring seals.
INSTALLATION PROCEDURE
IMPORTANT: Fuel injector O-ring should always be replaced whenever fuel injectors are serviced.
Each fuel injector is calibrated for a specific flow rate. Be sure to use the correct part number when ordering replacement fuel injectors. Be sure to reinstall the correct O-ring for fuel injector. If the sealing O-ring is not seated properly, a vacuum leak is possible and driveability complaints may occur.
1. Lubricate the new upper (3) and lower (2) O-ring with clean engine oil.
2. Install the new upper (3) and lower (2) injector O-ring on the fuel injector.
3. Install the fuel injector (2) on to fuel rail (5).
^ Ensure injectors (2) are aligned by orientating electrical connector.
^ Push in the retainer clip (1) far enough to engage retainer clip with machined slots on rail socket.
4. Install the fuel rail down on to intake manifold.
5. Install the fuel injector electrical connector to the fuel injector.
6. Add fuel to the fuel tank.
7. Tighten the fuel filler cap.
CAUTION: Refer to Battery Disconnect Caution In Service and Precautions.
8. Install the negative battery cable.
8.1. Turn ignition ON for 2 seconds.
8.2. Turn OFF the ignition for 10 seconds.
8.3. Turn ON the ignition.
8.4. Check for fuel leaks.
9. Install the fuel injector sight shield (1) to the engine.
NOTE: Refer to Fastener Notice in Service and Precautions.
10. Install the fuel injector sight shield nuts (2).
Tighten
Tighten the nuts to 3 N.m (27 lb in).
11. Install the rear seat cushion.