Valve Train Analysis - Engine Off, Valves and Cylinder Head

• Check for plugged oil drain back holes.
• Check for worn or damaged valve tips.
• Check for missing or damaged valve stem seals or guide-mounted valve stem seal.
• Check valve tappet shim gap.
• 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.