For 1990-2009 cars

### Removal Procedure

Warning: Gasoline or gasoline vapors are highly flammable. A fire could occur if an ignition source is present. Never drain or store gasoline or diesel fuel in an open container, due to the possibility of fire or explosion. Have a dry chemical (Class B) fire extinguisher nearby.

1. Remove the injector return hose.

Note: Do not pull the clip out but push it and simultaneously disconnect the injector return hoses. If the clip is removed from the injector, do not reuse the clip.

2. Disconnect the injection pump return hose.
3. Disconnect the common rail return hose.
4. Remove the junction block retaining bolts.
5. Remove the fuel return line assembly.

### Installation Procedure

1. Install the fuel return line assembly.
2. Connect the common rail return hose.
3. Connect the injection pump return hose.

Caution: Refer to Fastener Caution in the Preface section.

Note: Do not compulsorily connect the injector return hoses to the injectors. Push the clip and simultaneously connect the injector return hoses.

4. Install the junction block and tighten the retaining bolts to 11 N·m (97.4 lb in).