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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1168 (Engine Controls - 6.0L - Alternative Fuels (Introduction)) >> Repair Instructions >> Fuel Hoses/Pipes Replacement - Intermediate Pressure Regulator (IPR) to Fuel Rail - Bank 1 >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2004 GMC Sierra and 2004 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Identifying IPR Fuel Outlet Lines Components
    GM757010Courtesy of GENERAL MOTORS CORP.
  1. Connect the IPR fuel outlet lines (5, 8) to the IPR (2) using new O-rings (3). Lubricate the O-ring with petroleum jelly.
  2. NOTE: Refer to Fastener Notice in Cautions and Notices.
  3. Install the line hold-down bracket (4) and nut (6).

    Tighten:  Tighten the nut to 9 N.m (80 lb in).

  4. Connect the IPR fuel outlet line at the fuel rail using the hold downs (7).
  5. Assemble the IPR fuel outlet line screw clamp (9) around the hold downs (7).

    Tighten:  Tighten the screw clamp to 2 N.m (18 lb in).

  6. CAUTION: Refer to Battery Disconnect Caution in Cautions and Notices.
  7. Install the negative battery cable. Refer to Battery Negative Cable Disconnect/Connect Procedure (Single Battery) Battery Negative Cable Disconnect/Connect Procedure (Auxiliary Battery) in Engine Electrical in the C/K Pickup service manual.
  8. Start the vehicle and inspect for CNG fuel leaks at the serviced fitting using the J 45878  or an equivalent combustible gas detector. See Special Tools and Equipment .