PCV Valve
With engine running at idle, remove ventilation hose to crankcase from PCV valve and check that air flows through PCV valve. Place finger over PCV valve inlet and a strong vacuum will be felt if valve is operating properly.
With engine running at idle, remove ventilation hose to crankcase from PCV valve and check that air flows through PCV valve. Place finger over PCV valve inlet and a strong vacuum will be felt if valve is operating properly.