Valve Train Analysis - Valve Springs, Valve Spring Retainers and Valve Spring Retainer Keys

WARNING: This page is about a different car, the 2010 Mercury Mariner and 2010 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Valve tappets must be removed on the 2.5L engine.

Check for broken or damaged parts.
Check for correct seating of the valve spring retainer key on the valve stem and in valve spring retainer.
Check for correct seating on the valve stem.