Positive Crankcase Ventilation: Testing and Inspection

INSPECTION PROCEDURE




1. Blow air into the cylinder head side (1) of the PCV valve.
2. Check that air passes through the PCV valve easily.




3. Blow air into the intake manifold side (1) of the PCV valve.
4. Check that air passes through the PCV valve with high resistances.
5. If the PCV valve fails either test, replace the PCV valve.