For 1990-2009 cars

### Removal Procedure

1. Relieve the fuel system pressure. Refer to Fuel Pressure Relief Procedure .
2. Remove the negative battery cable.

Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

3. Remove the fuel rail assembly (1) from cylinder head. Refer to Fuel Injection Fuel Rail Assembly Replacement .
4. Spread the fuel injector retainer clip (3) to release the fuel injector from rail extrusion flange.

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.

5. Remove the fuel injector assembly (4).
6. Discard the fuel injector retainer clip.
7. Remove the injector O-ring seals (2) (6) from both ends of fuel injector, and discard.

### Installation Procedure

Caution: In order to reduce the risk of fire and personal injury that may result from a fuel leak, always install the fuel injector O-rings in the proper position. If the upper and lower O-rings are different colors (black and brown), be sure to install the black O-ring in the upper position and the brown O-ring in the lower position on the fuel injector. The O-rings are the same size but are made of different materials.

Important: Different fuel injectors are calibrated for different flow rates. When ordering new fuel injectors, be sure to order the identical part number that is inscribed on the old fuel injector.

1. Lubricate new fuel injector O-ring seals (2)(5)(6) with clean engine oil and install on fuel injector assembly.
2. Install the new fuel injector retainer clip (3) on fuel injector assembly

Important: Position clip on right side of the fuel injector electrical connector.

3. Install the fuel injector assembly (4) into fuel rail injector socket with electrical connector facing outward.

Important: Push in far enough to engage retainer clip over rail extrusion flange.

4. Install the fuel rail assembly (1). Refer to Fuel Injection Fuel Rail Assembly Replacement .
5. Install the negative battery cable.