Fuel Injector: Service and Repair

Injector Replacement

'99 model:

1. Relieve fuel pressure.
2. Remove the intake manifold covers and the intake manifold.





3. Disconnect the connectors from the injectors (A).
4. Disconnect the vacuum hose and fuel return hose from the fuel pressure regulator (B). Place a rag or a shop towel over the hoses before disconnecting them.
5. Remove the fuel rail bolts (C) from the fuel rail (D).
6. Remove the fuel rail.
7. Remove the injectors from the fuel rails.





8. Slide new cushion rings (A) onto the injectors (B).
9. Coat the new O-rings (C) with clean engine oil, and put them on the injectors.
10. Insert the injectors into the fuel rail (D) first.
11. Coat new seal rings (E) with clean engine oil, and press them into the intake manifold.
12. Install the fuel rail in the intake manifold.
13. Install and tighten the bolts.
14. Connect the vacuum hose and fuel return hose to the fuel pressure regulator.
15. Install the connectors on the injectors.
16. Install the intake manifold and the intake manifold cover.
17. Turn the ignition switch ON (II), but do not operate the starter. After the fuel pump runs for about 2 seconds, the fuel pressure in the fuel line rises. Repeat this 2 or 3 times, then check for fuel leakage.