Valve Train Analysis - Engine Off, Valve Tappet
WARNING: This page is about a different car, the 2007 Mercury Mariner and 2007 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
Valve tappet noise can be caused by any of the following:
- Excessive valve tappet shim gap
- Excessive valve guide wear
Excessive collapsed valve tappet shim gap can be caused by incorrect initial adjustment or wear of valve tappet shim face.
For additional information, refer to the valve train shim and gap inspection procedure in the appropriate engine article.