Valve Spring Inspection and Measurement
WARNING: This page is about a different car, the 2002 GMC Yukon XL, 2002 Chevrolet Suburban, and 2002 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
- Inspect the valve springs for broken coils or coil ends.
- Use the J 9666
in order to measure the valve spring force. Refer to Engine Mechanical Specifications
Important: Add a maximum of one shim up to 0.726 mm (0.030 in) thick to increase tension.
- If the valve spring tension is low, use a shim to increase tension.
- Recheck the valve spring tension, a valve spring that does not meet specification must be replaced.