Valve Train Analysis - Valves and Cylinder Head

WARNING: This page is about a different car, the 2013 Ford F-550 Super Duty, 2013 Ford F-450 Super Duty, 2013 Ford F-350 Super Duty, and 2013 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.

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.