Fuel Pressure Regulator: Service and Repair

REMOVAL PROCEDURE
1. Disconnect the negative battery cable.
2. Relieve fuel system pressure. Refer to Fuel Pressure Release.
3. Remove the upper manifold assembly.

DISASSEMBLE PROCEDURE
1. Disassemble the fuel pressure regulator snap ring retainer.
2. Disassemble the regulator assembly and the O-rings.
3. Discard the O-rings.

IMPORTANT: If the fuel pressure regulator is to be reinstalled, inspect the filter screen (if equipped) for contamination. If contaminated, remove. Discard the filter screen.

ASSEMBLE PROCEDURE
1. Lubricate the new O-rings with clean engine oil.
2. Install as an assembly, backup O-ring, large O-ring, filter and small O-ring.
3. Assemble the regulator with vacuum tube pointing down and snap ring retainer.

INSTALLATION PROCEDURE
1. Install the upper manifold assembly.
2. Connect the negative battery cable.