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.

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 take a close look at what engine compression means, what it does, and how to test it.