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Home >> Chevrolet >> 2004 >> Chevy Express G2500, Van Cargo Extended, 4.3 X, 4L60E/M30 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - 4.3L (Introduction) >> Repair Instructions >> Fuel Pressure Regulator Replacement >> Installation Procedure
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Installation Procedure

IMPORTANT: If the fuel pressure regulator is to be reinstalled, inspect the filter screen for contamination. If the filter screen is contaminated, replace the regulator.
    Fig 1: Exploded View Of Fuel Injector Assembly
    GM585444Courtesy of GENERAL MOTORS CORP.
  1. Lubricate the new O-rings with clean engine oil.
  2. Install the regulator seal backup ring (15).
  3. Install the regulator seal upper O-ring (16).
  4. Install the regulator assembly filter (17).
  5. Install the regulator seal lower O-ring (18).
  6. Assemble the regulator with the vacuum tube pointing down into the regulator retainer clip.
  7. Install the fuel pressure regulator retainer clip (13).
  8. Install the upper manifold assembly. Refer to Intake Manifold Replacement - Upper in Engine Mechanical-4.3L.
  9. Tighten the fuel filler cap.
  10. Connect the negative battery cable.
  11. Inspect for leaks.
    1. Turn ON the ignition for 2 seconds.
    2. Turn OFF the ignition for 10 seconds.
    3. Turn ON the ignition.
    4. Inspect for fuel leaks.
  12. Install the engine cover. Refer to Engine Cover Replacement in Interior Trim.
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