Compression Test The compression test works by spinning the engine through its cycles with the compression tester in place of the spark plug in the cylinder.

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.

We walk you through a compression test, a great way to determine the condition of your valves and piston rings.

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

We dyno test a low compression Ford 5.4L against a high compression variation and see which makes more power - Muscle Mustangs & Fast Fords ...