For 1990-2009 cars

### Removal Procedure

Caution: Refer to Fuel Pressure Caution in the Preface section.

1. Relieve the fuel system pressure. Refer to Fuel Pressure Relief.

Warning: Refer to Battery Disconnect Warning in the Preface section.

2. Disconnect the negative battery cable.
3. Remove the fuel pressure regulator. Refer to Fuel Pressure Regulator Replacement.
4. Disconnect the fuel feeding pipe from the fuel rail.
5. Remove the intake manifold. Refer to Intake Manifold Replacement.
6. Disconnect the fuel injector wiring harness connector.
7. Remove the fuel rail assembly.
8. Remove the fuel injector retainer clip.
9. Remove the fuel injectors by pulling them down and out.

### Installation Procedure

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

1. Lubricate the new fuel injector O-rings with engine oil.
2. Install the new O-rings on the fuel injectors.
3. Install the fuel injectors into the fuel rail sockets with the fuel injector terminals facing outward.
4. Install the fuel injector retaining clips onto the fuel injector and the fuel rail ledge.
5. Ensure that the clips are parallel to the fuse injector harness connector.
6. Install the fuel rail assembly into the cylinder head.
7. Connect the fuel injector wiring harness connector.
8. Install the intake manifold. Refer to Intake Manifold Replacement.
9. Connect the fuel feeding pipe to the fuel rail.

Caution: Refer to Fastener Caution in the Preface section.

10. Install the fuel pressure regulator and tighten retaining bolts to 12 N·m (106 lb in). Refer to Fuel Pressure Regulator Replacement.
11. Connect the negative battery cable.
12. Perform a leak check of the fuel rail and fuel injectors.