In this video, I’ll show you how to make your own smoke test machine to quickly and easily detect leaks. A smoke machine makes diagnosing vacuum leaks fast and hassle-free—watch now to see how it’s ...

Q: I have a 2013 Hyundai Elantra with 84,624 miles. The dealer recently replaced the engine under warranty. When I picked up the completed car, the check-engine light came on within a couple of miles.