Fuel Pressure Regulator: Service and Repair

Fuel Pressure Regulator Service:

WARNING: The fuel system is under constant pressure, even when the engine is OFF. Always release fuel pressure before servicing any fuel system component.

REMOVAL

1. Release fuel system pressure. Service and Repair
2. Disconnect negative battery cable and remove vacuum hose from fuel pressure regulator.
3. Loosen and remove fuel return hose at pressure regulator.

Fuel Return Tube Removal`:

4. Using 2 wrenches, one on the fuel pressure regulator, and another on the fuel return tube nut, loosen tube nut and disconnect the return tube from the fuel pressure regulator.
5. Remove the 2 fuel pressure regulator attaching nuts. Remove the fuel pressure regulator from the fuel rail. Check the fuel pressure regulator O-ring and replace if worn or damaged.

Fuel Pressure Regulator Replacement:

INSTALLATION

1. Lube the fuel pressure regulator O-ring with clean engine oil before installing regulator, then install regulator into receiver cup on fuel rail.
2. Install fuel pressure regulator attaching nuts and torque to 65 in-lbs (7 Nm). Install fuel return tube to fuel pressure regulator and torque to 150 in-lbs (28 Nm). Hold the fuel pressure regulator with one wrench and tighten the fuel tube nut with the other.
3. Install the fuel return hose and tighten the clamp to 10 in-lbs (1 Nm).
4. Install vacuum hose to fuel pressure regulator and connect negative battery cable.
5. Using scan tool [1], activate fuel pump and pressurize system.
6. Check for leaks.

Remarks

[1] Follow scan tool manufacturer's instructions.