Although some maintenance schedules include an interval for replacing the positive crankcase ventilation, or PCV, valve, others may not. In the latter case, a general recommendation is to replace ...

The positive crankcase ventilation valve releases exhaust gas and unburned fuel from the engine block into the intake manifold. All engines allow some exhaust gases, unburned fuel and oil to ...

Side effect #1: Crankcase pressure ("My engine leaks oil") The job of the Positive Crankcase Ventilation (PCV) system is to remove blow-by gases from the crankcase by vacuum and recirculate them ...

Car engines require a lot of parts working in unison to properly function. There are thousands of explosions happening every minute when your car's engine is running, hence the name "internal ...