Fuel Pressure Regulator: Service and Repair

REMOVAL
1. If removing fuel pressure regulator while fuel injection supply manifold is installed on the engine, perform fuel pressure release procedure.
2. Remove air cleaner outlet tube.
3. Remove vacuum line from fuel pressure regulator.
4. Remove two Allen-head retaining screws from fuel pressure regulator housing and discard.
5. Remove fuel pressure regulator, return seal and O-rings. Discard fuel pressure regulator return seal and O-rings.
6. If scraping is necessary, do not damage fuel pressure regulator or fuel injection supply manifold sealing surfaces.

INSTALLATION

CAUTION: Never use silicone grease. Silicone grease will clog the fuel injectors.

1. Lubricate new fuel pressure regulator O-rings with clean engine oil 10W30.
2. Make sure sealing surfaces of fuel pressure regulator and fuel injection supply manifold are clean.
3. Install new fuel pressure regulator O-rings and new return seal on fuel pressure regulator.
4. Using new allen-head retaining screws, install fuel pressure regulator on fuel injection supply manifold. Tighten retaining screws to 3.0-4.5 Nm (27-39 lb in).
5. Install vacuum line to fuel pressure regulator.
6. Install air cleaner outlet tube.
7. Perform fuel charging system post-service procedures. Post-Service Procedures