An ignition coil is a vital component of a vehicle's ignition system. It is responsible for converting the low voltage from the battery into the high voltage needed to produce sparks at the spark ...

We may receive a commission on purchases made from links. Is your car misfiring, having trouble starting, or idling rough? Are you wondering if the problem is one of your coil packs? If you're like ...

Spark plugs are the first part mechanics reach for during misfire diagnoses — but decades of repair data show they're rarely the root cause. Ignition coil packs, fuel injectors, and vacuum leaks ...