Fuel Injector: Service and Repair

Fig.11 Fuel Injectors:

Fig.12 Remove/Install Injector Connector:

REMOVAL - INJECTOR CONNECTOR
1. Disconnect electrical connectors at the fuel injectors (Fig. 11). To remove connector refer to (Fig. 12). Pull the red colored slider away from injector (1). While pulling the slider, depress tab (2) and remove connector (3) from injector. The factory fuel injection wiring harness is numerically tagged (INJ 1, INJ 2, etc.) for injector position identification. If harness is not tagged, make note of wiring location before removal.

REMOVAL
1. Disconnect negative cable from battery.
2. Release fuel system pressure. Refer to Fuel System Pressure Release procedure.
3. Disconnect fuel supply tube from rail. Refer to Quick-Connect Fittings in the Fuel Delivery.

Fig.15 Crankshaft Sensor Location:

4. Disconnect electrical connectors from fuel injectors (Fig. 13), refer to the fuel injector connector section for electrical connector removal.
5. Remove fuel rail mounting screws.
6. Lift rail off of intake manifold. Cover the fuel injector openings in the intake manifold.

INSTALLATION
1. Apply a light coating of clean engine oil to the upper O-ring.
2. Install injector in cup on fuel rail.
3. Install retaining clip.
4. Apply a light coating of clean engine oil to the O-ring on the nozzle end of each injector.
5 Insert fuel injector nozzles into openings in intake manifold. Seat the injectors in place. Tighten fuel rail mounting screws to 22.5 ± 3 Nm (200 ± 30 in. lbs.).
6. Attach electrical connectors to fuel injectors, refer to the fuel injector connector section for electrical connector installation.
7. Connect fuel supply tube to fuel rail. Refer to Quick Connect Fittings in the Fuel Delivery.