1. Relieve the fuel system pressure. Refer to Fuel Pressure Relief .
2. Remove the air cleaner outlet resonator. Refer to Air Cleaner Outlet Resonator Replacement .
3. Disconnect the fuel feed line quick connect fitting (4) from the fuel rail. Refer to Metal Collar Quick Connect Fitting Service .



4. Disconnect the engine wiring harness electrical connector from the electronic throttle control (ETC).



5. Remove the engine wiring harness clips (1) from the fuel rail tabs.



6. Disconnect the engine wiring harness electrical connector from the fuel injector harness wiring electrical connector (2).
7. Remove the fuel injector wiring harness electrical connector rosebud clip (1) from the intake manifold.



8. Remove the fuel rail bolts.

Important: Use care when removing the fuel rail assembly in order to prevent damage to the fuel injector spray tips.

9. Pull the fuel rail back and upward in order to release the fuel injectors from the cylinder head ports.
10. Remove the fuel rail.




Important: The fuel injector tip insulators may be located on the injector or may still be located in the cylinder head. Either way, ensure that all 4 injector tip insulators are removed and discarded.

11. Remove and discard the fuel injector tip insulators.



12. Disconnect the fuel injector wiring harness electrical connectors from the fuel injectors.
13. Remove the fuel injector wiring harness clips from the fuel rail.
14. Remove the fuel injector wiring harness from the fuel rail.
15. Remove the fuel injectors, if necessary. Refer to Fuel Injector Replacement .

Important: Install only NEW lower O-rings if the fuel rail and injectors were removed and re-installed If the fuel rail was replaced, then install NEW upper and lower O-rings.

1. Install the fuel injectors, if necessary. Refer to Fuel Injector Replacement .
2. Install the fuel injector wiring harness clips to the fuel rail.
3. Connect the fuel injector wiring harness electrical connectors to the fuel injectors.



4. Lubricate the NEW fuel injector tip insulators with clean engine oil.
5. Install the NEW fuel injector tip insulators to the cylinder head.



6. Lubricate the fuel injector O-rings with clean engine oil.
7. With the fuel injectors positioned downward, lower the fuel injectors into the cylinder head ports.
8. Carefully push down on the fuel rail in order the insert the injectors into the cylinder head ports.

Notice: Refer to Fastener Notice in the Preface section.

9. Install the fuel rail bolts.

Tighten
Tighten the bolts to 10 N·m (89 lb in).




10. Connect the engine wiring harness electrical connector to the fuel injector harness wiring electrical connector (2).
11. Install the fuel injector wiring harness electrical connector rosebud clip (1) to the intake manifold.



12. Install the engine wiring harness clips (1) to the fuel rail tabs.



13. Connect the engine wiring harness electrical connector to the ETC.



14. Connect the fuel feed line quick connect fitting (4) to the fuel rail. Refer to Metal Collar Quick Connect Fitting Service .
15. Install the air cleaner outlet resonator. Refer to Air Cleaner Outlet Resonator Replacement .