Fuel Rail: Service and Repair

Intake Manifold:

REMOVAL

1. Verify fuel rail assembly is depressurized by removing fuel tank cap and releasing pressure from fuel system at pressure relief valve on fuel rail assembly using a fuel pressure gauge.
2. Disconnect the battery ground cable and secure it out of the way.
3. Remove upper manifold assembly, as outlined in this section.
4. Remove spring lock coupling.
5. Remove four fuel rail assembly retaining bolts.
6. Carefully disengage fuel rail from fuel injectors and remove fuel rail.
NOTE: Removing the injectors with the fuel rail as an assembly may be easier.
7. Use a rocking, side to side motion while lifting to remove injectors from the fuel rail.

INSTALLATION

NOTE: Pay particular attention to proper O-ring seating to ensure that no leaks exist.

1. Push fuel rail down to ensure all injector O-rings are fully seated in the fuel rail cups and intake manifold.
2. Install retaining bolts while holding the fuel rail down. Tighten bolts to 87 lb. in. (10 N-m).
3. Install spring lock coupling.
4. With injector wiring disconnected, turn ignition to the RUN position to allow the fuel pump to pressurize the system.
5. Check for fuel leaks using a clean towel.
6. Connect fuel injector wiring harness. Run vehicle at idle for two minutes.
7. Turn engine OFF and inspect for leaks.