Every engine has some sort of crankcase breathing system. The internal combustion process creates pressure, some of which makes its way past the piston rings-along with fuel vapors-and into the rest ...

Improper blow-by control can lead to oily breather and valve covers. Is improper control of blow-by gases in your crankcase causing problems in your engine? If any of these questions below sound ...

The PCV (Positive Crankcase Ventilation) system is designed to regulate and remove fumes from the engine crankcase, and to alleviate crankcase pressure which could cause oil leaks or seal damage. The ...

All engines need some sort of crankcase pressure relief. Whether it's in the form of a simple breather, or a more effective PCV system, you need a way to vent blowby gases inherently generated by a ...