Positive Crankcase Ventilation: Testing and Inspection

A plugged valve or hose may cause:

^ Rough Idle.

^ Stalling or slow idle speed.

^ Oil leaks.

^ Oil in the air cleaner.

^ Sludge in the engine.

A leaking or stuck open valve, leaking hose, or missing grommet may cause:

^ Rough idle.

^ Stalling.

^ High idle speed.