Engine Off

Valve Cover Removed
Check for damaged or severely worn parts and correct assembly. Make sure correct parts are used with the static engine analysis.

Camshaft Roller Followers and Lash Adjusters (OHC)
^ Check for loose mounting bolts on camshaft carriers.
^ Check for plugged oil feed in the camshaft roller followers, lash adjusters or cylinder heads.

Camshaft
^ Check for broken or damaged parts.

Valve Springs
^ Check for broken or damaged parts.

Valve Spring Retainers and Retainer Keys
^ Check for proper seating of the valve spring retainer key on the valve stem and in valve spring retainer.
^ Check for proper seating on the valve stem.

Valves and Cylinder Head
^ 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 collapsed valve tappet gap.
^ 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).

Static checks (engine off) are to be made on the engine prior to the dynamic procedure.