You've probably heard racers talking about leakdown testing as a method of verifying engine condition. Being a hot rodder, you've probably performed a similar function by using a compression tester to ...

No smoke machine? No problem. Learn how to check for engine vacuum leaks using visual cues, soapy water, and DIY tricks to fix stalling and rough idling.

In order for an engine to perform its best, it must have proper fuel, spark, and cylinder sealing. Conducting a leakdown test is the best way to determine if there's a problem with a particular ...

Mechanics are blunt about it: the “little” oil spot under a parked car is often […] ...

Turbocharging and supercharging are some of the greatest automotive technological innovations ever. These forms of forced induction enable an engine to produce more power than its displacement ...

Anyone who has lived on a healthy diet of off-road and performance magazines has gotten a pretty good taste of the dyno process, even if it's just served on the printed page. It looks pretty exciting: ...

Engine oil (or motor oil, whichever term you prefer to use) is an essential substance when it comes to keeping an engine running smoothly. Your engine's oil will start to run down over time, however, ...