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

As a car owner, you may wonder what a PCV valve is, considering it is a part of your car engine you are not aware of. Your car’s engine is the lifeline of your car and has to be in its best shape ...

It’s well known that, years ago, some genius at AMC decided it would be a good idea to put plastic valve covers on Jeep 4.2L (258ci) engines. Unfortunately, it didn’t take long for them to start ...

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 ...

With the recent introduction of the new 5.0L motor from Ford, it seems obvious that the Modular motor program is here to stay. Those diehard enthusiasts of the original 5.0L who are still waiting for ...

Q:I have a 327 in my '31 Ford that features nearly the same cam and components as the one you referenced recently in Pit Stop (Nov. '12). Since a 1.6:1-ratio rocker arm will push the valve a little ...

You expect a sports car to accelerate and respond with enthusiasm, but the DMC-12’s 2.8L PRV V6 delivers only about 130 hp.

How Does an Engine Work? Before digging into this significant expense, it’s important to outline how an engine works. The engine is the heart of the car, truck, or SUV. The vehicle’s full function is ...