Valve Train Analysis - Valves and Cylinder Head

WARNING: This page is about a different car, the 2009 Mercury Milan, 2009 Lincoln MKZ, and 2009 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Valve tappets must be removed on 2.3L and 3.5L engines.

Check for plugged oil drain back holes.
Check for worn or damaged valve tips.
Check for missing or damaged guide-mounted valve stem seal.
Check for damaged hydraulic lash adjuster.
Check installed valve spring height.
Check for missing or worn valve spring seats.
Check for plugged oil metering orifice in cylinder head oil reservoir (if equipped).