Positive Crankcase Ventilation: Testing and Inspection

VENTILATION VALVE SUB-ASSY




a. Install clean hose to the PCV valve.
b. Inspect the PCV valve operation.
1. Blow air into the cylinder head side, and check that air passes through easily.

CAUTION: Do not suck air through the valve. Petroleum substances inside the valve are harmful.




2. Blow air into the intake manifold side, and check that air passes through with difficulty. If operation is not as specified, replace the PCV valve.

c. Remove clean hose from the PCV valve.