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 PCV valve not only improves vehicle emissions, but also engine efficiency, reliability, and power. By redirecting the blow-by gasses back into the intake to be burned, the engine can receive ...

A PCV system takes into account performance and emissions, but with a big emphasis on emissions. It's supposed to reduce pressure. In a perfect world, we'd like to see 0 psi in the crankcase but ...

First, you need to find the PCV valve. Most of the time, it's installed directly into the top valve cover of the engine. If you have a V8 or V6, it's on one of the valve covers, and depends on the ...