Taking an engine compression test is sort of like checking your car's blood pressure. It's a quick and painless procedure ...

‘It’s a big difference’ — Collins questions whether the FIA test reflects real engine heat.

Apart from the very curious, not many people ask why diesel engines, compared to gasoline, run higher compression ratios. The argument is reasonably straightforward and starts with fuel ...

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 ...