Read on for our picks for the best compression testers you can buy to test your engine’s compression and begin the process of figuring out why it isn’t running the way it should.

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.

Today, it's common practice to use a cylinder leak down gauge to evaluate how well each cylinder performs in retaining pressure.