Express 3/4 Ton Van V8-4.8L VIN V (2003)
4. 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)
5. Lubricate the fuel pressure regulator O-rings (11, 13) with clean engine oil.
6. Install the fuel pressure regulator (9).
IMPORTANT: Whenever the fuel pressure regulator is removed from the fuel rail, NEW O-rings and NEW retaining clips should be used on
reinstallation.
7. Install the NEW fuel pressure regulator retainer (8).
8. Connect the fuel pressure regulator vacuum line.
9. Tighten the fuel fill cap.
10. Inspect for leaks.
10.1. Turn ON the ignition with the engine OFF, for 2 seconds.
10.2. Turn OFF the ignition for 10 seconds.
10.3. Turn ON the ignition, with the engine OFF.
10.4. Inspect for fuel leaks.
