Fuel Injector: Service and Repair

Injector Replacement

1. Relieve the fuel pressure Service and Repair.

2. Remove the intake manifold/chamber assembly Intake Manifold/Chamber Assembly Removal/Installation.

3. Remove the nut (A).





4. Disconnect the injector connectors (B), the rocker arm oil control solenoid connector (C), and the EGR valve connector (D).

5. Remove the fuel rail mounting nuts (E) and the bolt (F) from the fuel rail (G), then remove the injectors and the fuel rail together.

6. Remove the injector clips (H) from the injectors (I).

7. Remove the injectors from the fuel rail.

8. Coat the new O-rings (black) (A) with clean engine oil, then insert the injectors (B) into the fuel rail (C).





9. Install the injector clips (D).

10. Coat the injector O-rings (brown) (E) with clean engine oil.

11. Install the fuel rail and the injectors in the cylinder head (F).

12. Install the fuel rail mounting nuts (G) and the bolt (H).

13. Install the nut (I) with a new O-ring (J).

14. Connect the injector connectors (K), the rocker arm oil control solenoid connector (L), and the EGR valve connector(M).

15. Install the intake manifold/chamber assembly.

16. Turn the ignition switch to ON (II), but do not operate the starter. After the fuel pump runs for about 2 seconds, the fuel rail is pressurized. Repeat this two or three times, then check for fuel leaks.