The pumping of an engine’s pistons creates a vacuum in the cylinders, and that vacuum is filled by air drawn in through the intake system. If leaks develop in hoses or engine parts downstream from the ...

In this video, I tackle the challenge of finding a vacuum leak in a car. I demonstrate how to create a smoke test machine to quickly and easily locate vacuum or boost leaks. Additionally, I provide ...

This generation of Holden engines was prone to failure of the crankcase ventilation valve (PCV). When it failed, it caused a vacuum leak in the engine that could easily cause rough running and hard ...

CARS.COM — How can you tell if your car has an exhaust leak? Your ears and nose can alert you to some exhaust leaks, but they may not be able to detect all leaks, including ones that could allow ...