How to do a leakdown and compression test.If you find one or more cylinders are below the 10 percent range of the others, squirt a little oil down the cylinders and try again. If the 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.

While an engine compression tester may not be the most common tool in a mechanic's garage, they can be very useful, especially for older cars.