Positive Crankcase Ventilation Valve: Testing and Inspection

POSITIVE CRANKCASE VENTILATION (PCV) VALVE INSPECTION
1. Remove PCV valve.
- Disconnect the PCV hose from the PCV valve.
- Remove the PCV valve.




2. Install clean hose to PCV valve.
3. inspect PCV valve operation.
- Blow air into the cylinder head side, and check that air passes through easily.

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




- 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.
4. Remove clean hose from PCV valve.
5. Reinstall PCV valve.