A battery in a traditional car cannot directly create engine spark. It’s only rated at 12 volts, after all, so it needs a little help boosting the signal to the spark plugs. To make that happen, a car ...

An ignition coil takes voltage from the battery and multiplies it to create a spark at the spark plugs, which in turn ignites the engine. Cars have been using some form of the coil ignition system ...

The CDI-AC (Capacitor Discharge Ignition – Alternating Current) system in the 139QMB engine is crucial for generating the electrical spark needed to ignite the fuel-air mixture within the engine. This ...

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.