Ignition coils sit at the center of every gasoline engine’s spark, yet they usually stay invisible until something goes wrong ...

Sudden misfires feel like the engine just lost its rhythm, yet the real drama often starts inside a failing coil pack. When ignition coils break down under heat, vibration, or age, they can turn a ...

Fig. 1. The layout of a typical six-cylinder, six-volt ignition system. Note the relationship of the primary and the secondary windings as indicated in the ignition coil. See All 10 Photos Fig. 2. The ...