The purpose of your engine is to compress fuel and air and then ignite it, creating heat energy that then makes mechanical motion. If your engine can't compress the air and fuel properly, the engine ...

If all those engine goodies don’t result in cylinder pressure, performance is sure to disappoint, and there’s more to the story than you think. To celebrate HOT ROD's 75th anniversary, we teamed up ...

Compression in a diesel engine is essential for effective and efficient performance. And when compression is lacking, damage can result. That is why it’s imperative to know whether your engine’s ...