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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 ...

In this video, I discuss the challenges of locating a vacuum leak in a car and demonstrate how to create a smoke test machine.

The only way to know your smoke alarm is functioning and ready (except for letting your turkey burn in the oven) is to test it. And tests don't just confirm that smoke detectors have power -- they can ...