Fuel Pressure Regulator: Service and Repair

REMOVAL

1. If removing fuel pressure regulator while fuel injection supply manifold is installed on engine, release pressure from fuel system.

2. Remove vacuum line at fuel pressure regulator.

3. Remove retaining screws from fuel pressure regulator housing.

4. Remove fuel pressure regulator O-ring and washer. Discard washer and inspect O-ring for signs of cracks and deterioration.

5. Inspect fuel return tube for kinks and abrasions.

INSTALLATION

1. Install new washer and O-ring on fuel pressure regulator.

2. Lubricate fuel pressure regulator O-ring with light oil.

NOTE: Never use silicone grease. It will clog the fuel injectors.

3. Make sure surfaces of fuel pressure regulator and fuel injection supply manifold are clean.

4. Install fuel pressure regulator on fuel injection supply manifold. Tighten retaining screws to 8.0-11 Nm (70-97 lb in).

5. Install vacuum line to fuel pressure regulator.

6. Install the fuel line.