How To Diagnose And Replace Bad Ignition Coils 

Direct ignition coils are a common failure item in a vehicle's ignition system. But how do you truly know if your vehicle's misfire is due to ignition coils?

An engine misfire can many things. Ignition, electrical, mechanical, the list goes on and on. 

In this video Gareth Foley, our BMW Catalog Manager, shows how to diagnose an engine misfire that's related to the ignition coils. 

The first way is via a scan tool, which is super helpful if you have one. But we realize a lot of people don't, and that's why we've added a second troubleshooting method—mechanical. 

By removing a coil and swapping it with another, you can troubleshoot the problem through process of elimination. More on that in the video. 


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Topics: BMW, Video

About the Author: Michael Roselli
Michael Roselli most recently comes from the automotive website Jalopnik, where he ran their video programming, but his love for cars and automotive culture stretches back much, much farther than that. He joined FCP Euro thanks to their humble roots, fearless leadership, recent success and more importantly—where they’re headed. He’ll be working hard to expand FCP Euro’s video programming, audience, and voice that’ll help propel the company to the next level. He also wrote this bio entirely in the third person and feels kinda weird about that.
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