To begin an engine's power stroke, the ignition system of the vehicle ignites a mixture of fuel and air in the combustion chamber. The ignition process starts when a high-voltage spark ignites the evaporated fuel in the cylinder. The spark plug, ignition coil, and other associated parts are what produce most of this spark. The ignition coil uses 12 volts of battery power to create a spark, which it then transforms to very high voltage (upwards of 25,000 v). Distributor, Distributor Less (DIS), and Coil On Plug (COP) systems are the three fundamental categories of ignition systems. Older automobiles utilise ignition systems with a distributor and a distributor less (DIS), while newer vehicles use ignition systems with a coil on plug (COP).