2004 Pontiac Montana FUEL PRESSURE REGULATOR

Notes

FUEL PRESSURE REGULATOR REPLACEMENT

REMOVAL PROCEDURE

Relieve fuel system pressure. Refer to Fuel Pressure Relief Procedure.
Disconnect the fuel pressure regulator vacuum line.
Remove the fuel pressure regulator retaining screw.
Using a shop towel to catch any spilled fuel, lift and twist the fuel pressure regulator in order to remove the fuel pressure regulator from the fuel rail.
Remove the retainer and spacer bracket from the rail and discard.
Remove the fuel pressure regulator from the engine fuel return pipe.
Remove the fuel pressure regulator inlet O-ring and discard.
INSTALLATION PROCEDURE

CAUTION: Connect the fuel return line before tightening the regulator attaching screw in order to prevent the regulator from rotating. Rotation of the regulator could damage the retainer and spacer bracket and lead to a fuel leak at the regulator inlet.

NOTE:

Do not use compressed air in order to test or clean a fuel pressure regulator as damage to the fuel pressure regulator may result.
Clean the fuel pressure regulator filter screen with gasoline if necessary.
Do not immerse the fuel pressure regulator in a solvent bath in order to prevent damage to the fuel pressure regulator.

Check the filter screen for contamination. If contaminated, replace the fuel pressure regulator.
Lubricate the new pressure regulator inlet O-ring with clean engine oil and install on the regulator inlet.
Install the fuel return pipe to the regulator.
Install the new retainer and spacer bracket into the slot on the fuel rail. NOTE: Refer to Fastener Notice in Service Precautions.
Install the pressure regulator to fuel rail. Tighten Tighten the engine fuel return pipe nut to 17 N.m (13 lb ft).
Connect the fuel pressure regulator vacuum line.
Install the pressure regulator attaching screw. Tighten Tighten the pressure regulator attaching screw to 8.5 N.m (76 lb in).
Inspect and verify that the retainer and spacer bracket is engaged in the slots in fuel rail. Grasp and pull on the regulator to ensure that retainer and spacer bracket are properly seated.
Inspect for fuel leaks.
9.1. Turn ON the ignition for 2 seconds.
9.2. Turn OFF the ignition for 10 seconds.
9.3. Turn ON the ignition.
9.4. Inspect for fuel leaks.