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 ...

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

Last month we acquainted you with a few unique procedures for using conventional tune-up devices—such as a vacuum gauge, timing light and electrical analyzer—for evaluating the efficiency and ...

Compression: An automotive term used by everybody, forever. Let's get into some detail and maybe develop a better understanding. Pressure, and more pressure: It's a must-have to produce power within ...

It's springtime! Time to start working on your project car, learn a new wrenching skill, discover what everything is under the hood (and how it works), or just spruce up your daily driver. All month, ...