One of the reasons your engine light came on might be because of a vacuum leak. Here's how to check if one occurred in your vehicle's engine.

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 ...

When this occurs, the manifold-vacuum signal decreases since the engine isn't sealed. Therefore, it's a good idea to check the vacuum-signal strength of your Pontiac engine as part of every tune-up.

Removing and resealing the vacuum pump on the 12-valve 5.9L engine technically isn’t too tall a task, but still, it does take a little know-how to get the job done quickly.