If there’s no spark, it’s a bad coil. Testing With a Multimeter If you don’t have the required tools above, you can also test your ignition coils with a multimeter.

In this video, I’ll show you exactly how to test your BMW spark plugs, ignition coils, and coil wiring without needing a multimeter—just using the kit provided. Whether it’s a misfire, bad ...

Spark plugs have a pretty predictable life cycle, but ignition coils can be harder to track. Here's how to tell if an ignition coil is on its way out.