Testing compression, a relatively simple task, is made even easier with the proper mix of current test equipment. We used Actron's Professional Compression Tester along with Actron's heavy-duty ...

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.

Curious to learn just how healthy or unhealthy your engine is? Get yourself a compression tester and find out. See the best compression testers here.

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.

The more compression and rebound, the less the damper is going to allow movement of the spring, and the less movement, the more stable the car is in harsh conditions.

We test four shocks on a shock dyno for compression and rebound comparisons.