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 ...

Every engine, regardless of its condition, has a certain amount of blow-by or air/fuel mixture that slips past the pistons and rings and finds its way into the crankcase. In addition, during normal ...

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 ...