Can a Bad PCV Valve Cause a Misfire

Does a Faulty PCV Valve Lead to Engine Misfires? ✅ Yes, a bad PCV (Positive Crankcase Ventilation) valve can cause a misfire by disrupting the air-fuel mixture. The PCV valve controls the flow of gases between the crankcase and intake manifold. If it sticks open or closed, it can cause vacuum leaks, lean or rich…