A vacuum leak can cause a variety of drivability issues in your vehicle. Here's how you can isolate the leak and the steps ...

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 ...

Carburetors with vacuum lines are still found on classic vehicles and small-displacement engines — but what is the vacuum actually used for? Let's take a look.

Question: why is vacuum so important on a vehicle? Answer: Vacuum is created when each piston moves down the cylinder with the intake valve open. It will change as the engine is running at different ...

Your car’s performance depends on precise control of air, fuel, and spark, and vacuum leaks quietly disrupt that balance. When unmetered air slips into the intake system, the engine computer receives ...

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 ...

Crankcase ventilation is almost provided in all automotive engines. Its prime job is to prevent the dilution of lubricating oil present in crankcase which may lead to corrosion of crankcase metals if ...

What is an intake manifold? How do intake manifolds work? What is a performance intake manifold? This video features a Skunk2 Pro series intake manifold courtesy of Redline360.com. Intake manifolds ...

For any of those DIY auto veterans who’ve had to deal with a vacuum leak on older rides, we all join you in gratitude for engine control advancements that have pretty much made these diagnostic ...