To inspect and replace a PCV valve, follow these steps: Locate the PCV valve. Some valves are integrated into the engine ...

N Never replace a PCV valve simply because it ‘looks dirty.’ All used PCV valves look dirty. Below, we’ll show two ways to check the condition of your PCV valve. Remove the PCV valve from ...

Separating the crankcase from the intake manifold, which is a source of varying air pressure, the PCV valve maintains the optimal level of vacuum in the crankcase to extract the products of blow ...