Positive Crankcase Ventilation: Testing and Inspection
POSITIVE CRANKCASE VENTILATION (PCV) SYSTEM INSPECTION1. INSPECT PCV VALVE OPERATION
a. Remove the PCV valve.
b. Install the clean hose to the PCV valve.
c. Blow air into the cylinder head cover side, and check that air passes through easily.
CAUTION: Do not suck air through the valve. Petroleum substances inside the valve are harmful.
d. Blow air into the air intake chamber side, and check that air passes through with difficulty.
If operation is not as specified, replace the PCV valve.
e. Remove the clean hose from the PCV valve.
f. Reinstall the PCV valve.
2. VISUALLY INSPECT HOSES AND CONNECTIONS
Check for cracks, leaks or damage.