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

Compression testing can reveal internal engine problems that a visual inspection won't. The easiest way to compression-test an engine is with the engine installed in a running car.

You've probably heard racers talking about leakdown testing as a method of verifying engine condition. Being a hot rodder, you've probably performed a similar function by using a compression ...

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.