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

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.

Compression test kits do just what they say: measure the ability of each cylinder of your engine to combust the fuel/air mixture without losing any of the resulting energy.

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.

Read on as we list ways to figure and measure your compression ratio, total piston volume, and choosing the best pistons. Read on for more details along with photos only in Mopar Muscle 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.

Most pickup trucks sold today have internal combustion engines. Passenger vehicles are powered by two main types of engines: compression, aka diesel, and spark ignition, aka gasoline. Besides the ...

In Two Stroke Spark Ignition engines the thermal efficiency increases with increase in compression ratio. Also, with higher compression ratios the lean burning limit increases because of the reduction ...

Forget variable length intakes and variable valve timing, Infiniti is going all the way and introducing variable cylinder compression ratios. The new VC-T turbo engine automatically adjusts ...

Nissan varies the compression ratio between 8.0:1, a fairly low number—though typical for a turbocharged engine—and up to 14.0:1, very high for any engine, let alone one with boost.

Any diesel-engine manufacturer that confidently claims it produces an oil-burner with the “world’s lowest compression ratio,” will no doubt draw the immediate a ...