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 ...

From sudden misfires to rough idling, a failing ignition coil can turn your smooth Toyota drive into a frustrating experience. Knowing the signs, how to test them, and when to replace them can save ...

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 for ...