For 1990-2009 cars

### Removal Procedure

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

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

1. Relieve the fuel system pressure. Refer to Fuel System Diagnosis .
2. Disconnect the vacuum line.
3. Remove the retaining bolts.
4. Remove the fuel pressure regulator.

### Installation Procedure

Important: O-rings must be oiled with clean engine oil and installed into the fuel rail before the fuel pressure regulator is installed.

1. Install a small, oiled O-ring into the fuel rail.
2. Install the large, oiled O-ring into the fuel rail.
3. Install the fuel pressure regulator into the fuel rail.

Notice: Refer to Fastener Notice in the Preface section.

4. Install the retaining bolts.

Tighten
Tighten the fuel pressure regulator bolts to 5 N·m (44 lb in).

5. Connect the vacuum line.
6. Energize the fuel system.
7. Run the vehicle and inspect for leaks.