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Home >> Chevrolet >> 2021 >> Blazer RS, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 2 (Engine Mechanical - 2.5L (LCV)) >> Repair Instructions >> Cylinder Head Cleaning and Inspection >> Valve Spring Cleaning and Inspection

Valve Spring Cleaning and Inspection

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  1. Clean the valve springs in solvent.
  2. WARNING:

    Refer to Safety Glasses Warning .

  3. Dry the valve springs with compressed air.
  4. Inspect the valve springs for broken coils or coil ends.
  5. GM1210909Courtesy of GENERAL MOTORS COMPANY

    Measure the valve spring tension using the EN 22738-B  tester. Refer to Engine Mechanical Specifications 

  6. If low valve spring load is found, replace the valve springs. DO NOT use shims to increase spring load. The use of shims can cause the valve spring to bottom out before the camshaft lobe is at peak lift.