Spark Ignition is a process used in internal combustion engines to ignite the air-fuel mixture. It involves a spark plug that generates a small electric spark, which ignites the fuel, causing a rapid expansion of gases that drives the engine's pistons. This method is commonly found in gasoline engines. The spark plug plays a crucial role in the spark ignition system, ensuring reliable ignition at the right moment. Proper functioning of the spark plug is essential for engine performance, fuel efficiency, and reducing emissions. Regular maintenance can help ensure optimal operation of the spark ignition system.