We may receive a commission on purchases made from links. I have been working on my own vehicles for almost 40 years and in that time have accumulated a sizable collection of tools. The bulk of them ...

As you may know, an engine's compression ratio is directly linked to its combustion efficiency. All else being equal, higher-compression engines tend to make more power while offering better fuel ...

The Mazda Skyactiv engine has been around for over a decade now and is pretty impressive on paper. But is the engine reliable ...

Higher power usually means worse fuel economy, except when it comes to compression ratio. Here is how engines extract more ...

For an engine to create propulsion, it first needs a few core ingredients. The process begins with fuel being pumped through the car's fuel lines and into the combustion chamber. This is where fuel ...

Increasing an engine’s compression ratio is a proven way of unlocking extra horsepower, but there’s a point of diminishing returns. The team at Garage 54, the Russian mechanics who built a V16 using ...

We may receive a commission on purchases made from links. While browsing auto repair and maintenance tools at your local parts store, you've likely come across compression testers like the Orion Motor ...