Positive Crankcase Ventilation: Testing and Inspection

POSITIVE CRANKCASE VENTILATION (PCV) VALVE INSPECTION

NOTE: Removing the PCV valve might damage to the tab of the PCV valve and it will not be able to be reinstalled. Due to this, inspect the PCV valve with it installed on the vehicle.




1. Disconnect the negative battery cable.
2. Disconnect the PCV hose from the PCV valve.
3. Apply pressure to the PCV valve and verify that there is no airflow.
- If there is airflow, replace the PCV valve.

4. Apply vacuum to the PCV valve and verify that there is airflow.
- If there is no airflow, replace the PCV valve.