Fuel Injector: Service and Repair

FUEL RAIL

















Exploded View

Removal and Installation

WARNING:
- Do not smoke or carry lighted tobacco or open flame of any type when working on or near any fuel-related components. Highly flammable mixtures are always present and can be ignited, resulting in possible personal injury.
- Fuel in the fuel system remains under high pressure even when the engine is not running. Before working on or disconnecting any of the fuel lines or fuel system components, the fuel system pressure must be relieved. Failure to do so can result in personal injury.

1. Release the fuel system pressure.
2. Disconnect the battery ground cable.
3. Remove the air cleaner outlet pipe.
4. Disconnect the evaporative emission (EVAP) canister purge valve vapor tube-to-throttle body spacer quick connect coupling.
5. Disconnect the brake booster-to-throttle body spacer quick connect coupling.
6. Disconnect the electronic throttle control electrical connector.
7. Disconnect the throttle position (TP) sensor electrical connector.
8. Remove the 4 throttle body (TB) spacer assembly-to-supercharger bolts and the TB spacer assembly.
- Discard the gasket.
- To install, tighten to 10 Nm (89 lb-in).

9. Disconnect the intake air temperature (IAT) sensor electrical connector.
10. Disconnect the fuel supply tube quick connect coupling from the fuel rail.
11. Disconnect the positive crankcase ventilation (PCV) valve tube-to-supercharger quick connect coupling and position aside.
12. Disconnect the fuel rail pressure and temperature sensor electrical and vacuum connectors.
13. Disconnect the 8 fuel injector electrical connectors.
14. Remove the 4 fuel rail bolts.
- To install, tighten to 10 Nm (89 lb-in).

15. Remove the fuel rail and the 8 fuel injectors.


16. NOTE: The fuel injector clip can be reused if it is not damaged during removal.

Remove the fuel injector clips from the fuel injectors.

17. Inspect the fuel injector O-rings for damage.
18. To install, reverse the removal procedure.
- Lubricate the upper and lower fuel injector O-ring seals with clean engine oil prior to installation.