Is your engine underperforming? Our expert shares how a diesel engine compression test could provide the diagnosis.

A compression test is to determine how much pressure the engine makes, and a leakdown test measures its ability to hold pressure.

The guys at Muscle Car Review show you how to check engine compression with the latest tools. Check it out only at hotrod.com or the October 2011 issue of Muscle Car Review Magazine.

Not all braking systems on semis have to be loud to be effective. Exhaust brakes make a fraction of the noise that compression brakes do, here's how they work.

A crank compression test can tell you a lot about an engine and we will be going over the numbers. - Super Chevy Magazine ...

With a simple diesel engine compression test, it is possible to spot compression problems before they get worse. Here’s information on these tests and how to decide if it is time to perform one.