Originally the lawnmower engine used a magneto coil ignition system, magnetos are simple and very common in lawnmowers. The magneto is designed to produce a high voltage spike when influenced by a ...

The ignition (or distributor) cap is where ignition wires that run to the spark plugs receive high-voltage current from the ignition coil. Metal contacts in the cap connect with contacts in the ...

Since then, most cars have featured electronic fuel injection and ignition ... distributing the high-voltage electricity from the ignition coil (which, at engine start, receives low-voltage ...

Advancements have greatly reduced the need for ignition system service. Where distributor caps and rotors once needed replacement, electronic ... though an individual coil-on-plug eliminates ...