Rainier 2WD V8-5.3L VIN P (2004)
Fuel Pressure Regulator: Service and Repair
FUEL PRESSURE REGULATOR REPLACEMENT
REMOVAL PROCEDURE
1. Relieve the fuel system pressure. Refer to Fuel Pressure Relief Procedure.
2. Disconnect the fuel pressure regulator vacuum line.
3. Clean any dirt from the fuel pressure regulator retainer and the surrounding area.
4. Remove the fuel pressure regulator retainer (8).
5. Remove the fuel pressure regulator (9).
6. Ensure non of the following parts are still in the fuel rail.
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Backup ring (10)
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Regulator seal O-ring (11)
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Regulator filter (12)
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Regulator seal O-ring (13)
INSTALLATION PROCEDURE
1. Install the following parts onto the fuel pressure regulator (9), if necessary.
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Backup ring (10)
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Regulator seal O-ring (11)
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Regulator filter (12)
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Regulator seal O-ring (13)
2. Lubricate the fuel pressure regulator large O-rings (11,13) with clean engine oil.
3. Install the fuel pressure regulator (9).
4. Install a NEW fuel pressure regulator retainer (8).
