Positive Crankcase Ventilation: Testing and Inspection

PCV VALVE INSPECTION





1. REMOVE PCV VALVE
(a) Disconnect the PCV hose from the PCV valve.
(b) Remove the PCV valve.
2. INSTALL CLEAN HOSE TO PCV VALVE
3. INSPECT PCV VALVE OPERATION





(a) Blow air into the cylinder head side and check that air passes through easily.

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





(b) Blow air into the intake air connector side and check that air passes through with difficulty.
If operation is not as specified, replace the PCV valve.
4. REMOVE CLEAN HOSE FROM PCV VALVE
5. REINSTALL PCV VALVE





PCV HOSES AND CONNECTORS INSPECTION
VISUALLY INSPECT HOSES, CONNECTIONS AND GASKETS
Check for cracks, leaks or damage.