In this video, learn to test spark plugs and ignition coils for a BMW using a specialized test kit. Discover how to identify ...

Checking, replacing and maintaining your spark plugs is actually one of the easier and most affordable car-maintenance jobs you can do in the comfort of your own driveway — that is, if you don’t screw ...

Ignition coils last far longer than spark plugs and only need replacement when symptoms appear. Here’s how to tell if coils ...

Spark plugs are an essential part of your engine’s operation. When your engine fires, it’s the spark that causes the ignition cycle to begin. Over time, spark plugs wear out and should be replaced. If ...