For 1990-2009 cars

### Removal Procedure

Warning: Refer to Gasoline/Gasoline Vapors Warning in the Preface section.

1. Remove the common rail assembly. Refer to Fuel Injection Fuel Rail Assembly Replacement.
2. Clean interface area of the rail pressure sensor using proper degreasing materials and compressed air for drying.

Caution:

• | Use care when servicing the fuel system components, especially the fuel injector electrical connectors, the fuel injector tips, and the injector O-rings. Plug the inlet and the outlet ports of the fuel rail in order to prevent contamination.

• | Do not use compressed air to clean the fuel rail assembly as this may damage the fuel rail components.

• | Do not immerse the fuel rail assembly in a solvent bath in order to prevent damage to the fuel rail assembly.

3. Remove the rail pressure sensor with the gasket if equipped.

### Installation Procedure

1. Inspect and clean the thread and the sealing surface of the rail.
2. Inspect and clean the thread and rail pressure sensor (1).
3. Lubricate thread and bite edge (2) of the rail pressure sensor using lubricant Ft1v27, only apply a thin lubrication film.

Caution: Refer to Fastener Caution in the Preface section.

4. Install the rail pressure sensor to the common rail and tighten to 70 N·m (51.6 lb ft).
5. Prime the fuel system. Refer to Fuel System Priming.
6. If you replaced the pressure sensor with a new one, reset the zero fuel correction values using a scan tool.