One of the most difficult tuning problems to overcome is the seemingly ever-present engine vacuum leak. Vacuum is an important component of the internal-combustion process because it controls basic ...

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

If you've taken a trip through the pits at a major drag race lately, you may have noticed that many of the Pro Stock, Gasser, Modified Production and Super Stock cars have begun sprouting unfamiliar ...

We may receive a commission on purchases made from links. A vacuum leak in a car occurs when there's an unintended opening in the vacuum system, which allows air to enter the engine. This disrupts the ...

We've really been enjoying project C3 Triple-Ex, especially now that we've installed our 427ci "LS7 Killer" small-block, but we've recently encountered an issue common to street engines with ...

It really was disappointing. The small-block Chevrolet rebuild went well and after the engine survived the flat tappet camshaft break-in, performance seemed encouraging. But after a couple of hundred ...

You hear it all the time: I don't like these modern cars with their computers and newfangled electronics. Just give me a points ignition and a carburetor! Well, maybe that philosophy works for a your ...