Venting a typical V-8 engine isn't a complex affair. A breather atop each valve cover is usually all that's needed. Of course, replacing one with a PCV valve to introduce a bit of vacuum into the ...

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 ...

Migration of refrigerant to the compressor’s crankcase during an off cycle is a serious problem. Significant compressor damage can occur if the problem is not remedied. If refrigerant migration does ...

We tried snugging those pleated cotton-gauze breathers. We tightened the valve cover bolts. We tried new valve cover breather grommets. We swapped on different breathers.We even tied old rags around ...