A detailed how‑to explains how to tell faulty spark plug wires from ignition coils in LS engines, a common cause of misfires and hard starts. It recommends combining visual inspections, OBD‑II ...

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 ...