The PCV valve and pipe are located in the lid of the valve. To access it, remove the hose and unfasten the PCV valve from the lid, then reinstall the hose. At normal operating temperature with the engine idling, place your finger on top of its hole. In case there is no vacuum at it; inspect a plugged hose or a plugged or deteriorated valve and replace any plugs or deteriorated hoses. Turn off the engine, remove PCV Valve from Hose and blow into Valve from Cylinder Head end. Replace this valve if air doesn't pass through in that direction. If you buy a new PCV value, make sure that it is for your specific vehicle and engine size. Always compare old valve with new one to ensure they are alike.