The PCV valve (positive crankcase ventilation valve) is a vital part of the emissions controlsystem on most vehicles. Not every vehicle has a PCV valve, but most do. If yours has one, and if your ...

A small gap with big importance in the performance and health of an engine - here's everything you need to know.

The Chevrolet small-block engine was a brilliant piece of engineering, attested by the fact that well over 100,000,000 were built. However the first generation was not as oil-tight as later ...

Mechanics who work on these engines point to valve stem seal failures and timing issues that arrive well before 100,000 miles ...

Cam lift and timing can put the valves dangerously close to the piston. We show you how to check the clearance In all but most the mild engine builds, taking extra time to check piston to valve ...

Imagine this scenario. You've scrimped and saved, and finally have enough dough to get the Corvette you've had your eyes on. Just for argument's sake, let's say that dream car is a cream-puff '92 ...

Most modern gasoline and diesel-powered engines found in the cars and trucks seen on today's roadways rely on the four-cycle-engine principles developed in the late 1800s by Nikolaus Otto, Gottlieb ...