Fuel Pressure Regulator: Service and Repair

REMOVAL

Fuel Rail Assembly:

1. Verify fuel rail assembly is depressurized by removing fuel tank cap and releasing pressure from fuel system at pressure relief valve on fuel rail assembly using a fuel pressure gauge.
2. Remove vacuum line at pressure regulator.
3. Remove two fuel rail to lower intake manifold attaching bolts. Carefully lift fuel rail (regulator side only) off of injectors to gain access to regulator attaching screws.
4. Remove three retaining screws from regulator housing and discard.
5. Remove pressure regulator assembly, gasket and O-ring. Discard gasket and O-ring.
NOTE: If scraping is necessary, be careful not to damage fuel pressure regulator or fuel rail gasket surfaces.

INSTALLATION

1. Lubricate new fuel pressure regulator O-ring.
2. Ensure gasket surfaces of fuel pressure regulator and fuel rail assembly are clean.
3. Install new O-ring and new gasket on regulator.
4. Install fuel pressure regulator on fuel rail assembly. Tighten retaining screws to 34 lb. in. (3.75 N-m).
5. Install regulator side of fuel rail to injectors. If injector(s) were completely disengaged from fuel rail cup(s), lubricate injector O-rings with clean oil prior to inserting in fuel rail cups. Push regulator side of fuel rail down on injectors and tighten fuel rail to intake manifold bolts to 7 lb. ft. (10 N-m).