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Home >> Cadillac >> 2019 >> ATS Premium Performance >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> ENGINE MECHANICAL - 3.6L (LGX LF4) - REPAIR INSTRUCTIONS - OFF VEHICLE (1 Of 2) >> Repair Instructions - Off Vehicle >> Valve Spring Inspection and Measurement >> Measurement Procedure

Measurement Procedure

  1. GM1210909Courtesy of GENERAL MOTORS COMPANY

    Measure the valve spring tension using the EN-22738-B  Valve Spring Tester. Engine Mechanical Specifications (LF4) , or Engine Mechanical Specifications (LGX)

  2. 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.
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