Measurement Procedure
WARNING: This page is about a different car, the 2017 Cadillac ATS. However, it is still accessible from the selected car via links, so may be relevant.
- Measure the valve spring tension using the EN 22738-B tester. Refer to Engine Mechanical Specifications (LF4)Engine Mechanical Specifications (LGX) .
- 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.