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.

An engine compression test kit consists of a pressure gauge and an assortment of hoses and fittings so that the gauge can be connected to the spark plug holes on each of an engine's cylinders. To ...

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

We tested three engines: a small-block Chevrolet that looked rough, a big-block Chevy that had a "Krylon rebuild," and a high-mileage 4.8L Ls engine.

It is the first variable compression engine to reach full production. The company spent 20 years developing the variable-compression-ratio technology and filed more than 300 patents on the design.

355ci Small-Block Modest Mouse vs. LS1 Project Groundhog In case you missed the buildups on the two engines, the first was the 355ci small-block Chevy using a 1986-and-later one-piece rear-main ...

Legendary Chevy engines have left many questions that still have not been answered and we have set forth a series of Chevy small block testing to see which was the overall the best engine between ...

Air-breathing hypersonic powerplants are typically fighter-jet engine-sized. But Velontra has just test-run its surprisingly small Bronco hypersonic propulsion system.