A failing ignition coil can lead to poor performance and unexpected breakdowns. This article highlights the most common signs of a bad ignition coil in trucks, including engine misfires, rough idling, and reduced fuel efficiency. Learn how to spot the warning signs early to avoid costly repairs. Read more at https://truckacparts.wordpress.com/2025/08/31/common-symptoms-of-a-bad-ignition-coil-in-your-truck/