Positive Crankcase Ventilation: Testing and Inspection

This crankcase ventilation system does not use a PCV valve. The system uses a separator to vent the engine and separate the vapour from the oil. Returning the oil to the crankcase and the vapour to the engine to be reburned. A plugged oil/air separator or hose may cause:
^ Oil leaks due to high crankcase pressure.
^ Sludge in the engine due to inadequate separating of crankcase vapors.