Positive Crankcase Ventilation (PCV)

Remove PCV valve. PCV valve is located at front of driver's side valve cover, below oil fill cap. Apply air pressure to PCV valve at cylinder head side of PCV valve. Ensure air flows easily through PCV valve. Apply air pressure to PCV valve at intake manifold side of PCV valve. Ensure air flows through PCV valve with some resistance. Replace PCV valve if valve does not function as described.