Fuel Injector: Service and Repair

REMOVAL




1. Release fuel system pressure. Refer to Fuel Pressure Release Procedure.
2. Remove the battery cover and disconnect negative battery cable.
3. Remove the air cleaner assembly, refer to the Engine/Air Intake System/Air Cleaner Housing for more information.
4. Disconnect the electrical connector to the MAP sensor and Coolant Temperature sensor.




5. Disconnect the electrical connector to the TPS and Idle Air Control.




6. Remove the wiring harness from the wiring clips under thew throttle body.




7. Disconnect the electrical connector from the fuel injectors.




8. Disconnect the fuel line quick connector.




9. Remove the bolts for the fuel rail.




10. Pull fuel rail and injectors straight up and out of the intake manifold.
11. Move the fuel rail forward and out from under the intake manifold and throttle body.




12. Remove the fuel injector from the fuel rail.

INSTALLATION
1. Install the fuel injectors to the fuel rail.
2. Install fuel rail under throttle body.
3. Apply a light coating of clean engine oil to the O-ring on the nozzle end of each injector.
4. Insert fuel injector nozzles into openings in intake manifold. Seat the injectors in place. Tighten fuel rail bolts to 12 Nm (105 in. lbs.).
5. Attach electrical connectors to fuel injectors.
6. Connect the electrical connector to the MAP sensor and Coolant Temperature sensor.
7. Connect the electrical connector to the TPS and Idle Air Control.
8. Install the wiring harness to the wiring clips under the throttle body.
9. Connect fuel supply tube to fuel rail. Refer to Quick Connect Fittings in the Fuel Delivery section
10. Install the negative battery cable and install the battery cover.
11. Install the air cleaner assembly, refer to the Engine/Air Intake System/Air Cleaner Housing for more information.
12. Use the DRBIII(R) scan tool ASD Fuel System Test to pressurize the fuel system. Check for leaks.