Fuel Pressure Regulator Replacement

REMOVAL PROCEDURE

CAUTION: Refer to Battery Disconnect Caution in Service Precautions.

1. Disconnect the negative battery cable.
2. Relieve the fuel system pressure. Refer to Fuel Pressure Relief Procedure.
3. Remove the upper manifold assembly. Refer to Intake Manifold Replacement - Upper or Intake Manifold Replacement - Lower in Engine - 5.0L and 5.7L.

DISASSEMBLY PROCEDURE

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




1. Disassemble the fuel pressure regulator snap ring retainer.




2. Disassemble the regulator assembly and the O-rings.
3. Discard the O-rings.

ASSEMBLY PROCEDURE




1. Lubricate the new O-rings with clean engine oil.
2. Install the backup 0-ring, the large O-ring, the filter and the small O-ring.
3. Assemble the regulator with the vacuum tube pointing down into the snap ring retainer.

INSTALLATION PROCEDURE




1. Install the upper manifold assembly. Refer to Intake Manifold Replacement - Upper or Intake Manifold Replacement - Lower in Engine.
2. Connect the negative battery cable.