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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1021 (Engine Mechanical - 8.1L) >> Repair Instructions >> Off-Vehicle Repair Instructions >> Cylinder Head Cleaning and Inspection >> Cleaning Procedure

Cleaning Procedure

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
    CAUTION: Refer to Safety Glasses Caution in Cautions and Notices.
    IMPORTANT: Mark, sort, or organize components for return to their original locations.
  1. Clean the valve stems and heads on a buffing wheel.
  2. Clean the following components in solvent:
    • Valve stem keys (220)
    • Valve spring cap (219)
    • Valve spring (218)
    • Valve Rotators (216)
    • Valve (232)
    • Cylinder head
    3. Fig 1: View Of Valve & Components
    GM1310007Courtesy of GENERAL MOTORS CORP.
    CAUTION: Refer to Safety Glasses Caution in Cautions and Notices.
  3. Dry the components with compressed air.
    4. IMPORTANT: Be careful not to damage the chamber or the valve seat.
  4. Use the J 8089  in order to clean the carbon from the combustion chambers.
    5. Fig 2: Cleaning Carbon From Combustion Chambers Using J 8089
    GM35201Courtesy of GENERAL MOTORS CORP.
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