Notice: Use care in removing the fuel injectors in order to prevent damage to the fuel injector electrical connector pins or the fuel injector nozzles. Do not immerse the fuel injector in any type of cleaner. The fuel injector is an electrical component and may be damaged by this cleaning method.

Important: Important the fuel injector is serviced as a complete assembly only. If the fuel injectors are found to be leaking, the engine oil may be contaminated with fuel.

1. Relieve fuel system pressure. Refer to Fuel Pressure Relief .
2. Remove the fuel rail. Refer to Fuel Injection Fuel Rail Assembly Replacement .
3. Remove the fuel injector retaining clips (1).
4. Remove the fuel injector (3) from the fuel rail.
5. Remove the fuel injector Upper O-ring (2).
6. Remove the fuel injector lower O-ring (4).

Important: Each fuel injector is calibrated for a specific flow rate. Be sure to use the correct part number when ordering replacement fuel injectors. When replacing the fuel injector O-rings, be sure to install the brown O-ring in the lower position. The lower fuel injector O-ring uses a nylon collar called the O-ring backup to properly position the O-ring on the fuel injector. Be sure to install the O-ring backup or the sealing O-ring may move on the fuel injector when you are installing the fuel rail. If the sealing O-ring is not seated properly, a vacuum leak is possible and driveability complaints may occur.

1. Install the upper O-ring (2) on the fuel injector .
2. Install the lower O-ring (4) on the fuel injector.
3. Install the fuel injector (3) into the fuel rail.
4. Install the fuel injector retaining clips (1).
5. Install the fuel rail. Refer to Fuel Injection Fuel Rail Assembly Replacement .
6. Install the upper intake manifold. Refer to Intake Manifold Replacement .
7. Tighten the fuel filler cap.
8. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
9. Inspect for fuel leaks using the following procedure:

9.1.	Turn ON the ignition for 2 seconds.

9.2.	Then OFF the ignition for 10 seconds.

9.3.	Turn ON the ignition.

9.4.	Inspect for fuel leaks.