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Home >> Isuzu >> 2004 >> Ascender LS, 5.3 P, RWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls (Introduction) - 5.3L >> Repair Instructions >> Fuel Pressure Regulator Replacement >> Removal Procedure
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Removal Procedure

    Fig 1: Exploded View Of Fuel Rails & Injector Components
    GM350543Courtesy of GENERAL MOTORS CORP.
  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.
    • Backup ring (10)
    • Regulator seal O-ring (11)
    • Regulator filter (12)
    • Regulator seal O-ring (13)
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