One of the easiest ways to test an engine's health is by checking its compression. Testing compression isn't something the average muscle car owner would do every year, but it is a useful tool to ...

An engine's static compression ratio is only a rough indicator of its ability to tolerate a particular gasoline octane ratio. The real key isnumbers. Most engine builders say 175 to 185 psi cranking ...

Diesel engines can technically run backwards, though there's very little (if any) practical applications for this, especially for road-going engines.

A fundamental difference between gasoline and diesel engines is that a gasoline engine uses spark ignition while a diesel engine uses compression ignition. Before we delve deeper, let's understand how ...