An ignition coil takes voltage from the battery and multiplies it to create a spark at the spark plugs, which in turn ignites the engine. Cars have been using some form of the coil ignition system for ...

When most drivers turn the key or press a button to start their vehicle, they’re probably not mentally going through everything that needs to happen in order for their engine to start. And while the ...

In this video, learn to test spark plugs and ignition coils for a BMW using a specialized test kit. Discover how to identify a faulty spark plug, ignition coil, or wiring without a multimeter. Man's ...

Craig brought 15 years of automotive journalism experience to the Cars team. A lifelong resident of Michigan, he's as happy with a wrench or welding gun in hand as he is in front of the camera or ...