Positive Crankcase Ventilation Valve: Testing and 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.

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





- 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.
4. REMOVE CLEAN HOSE FROM PCV VALVE.
5. REINSTALL PCV VALVE.