Pre-ignition Pre-ignition Pre-ignition (or preignition) in a spark-ignition engine is a technically different phenomenon from engine knocking, and describes the event wherein the air/fuel mixture in the cylinder ignites before the spark plug fires. Pre-ignition is initiated by an ignition source other than the spark, such as hot spots in the combustion chamber, a spark plug that runs too hot for the application, or carbonaceous deposits in the combustion chamber heated to incandescence by previous engine combustion events. The phenomenon is also referred to as 'after-run', or 'run-on' or sometimes dieseling, when it causes the engine to carry on running after
The Ignition Factor The Ignition Factor The Ignition Factor, known in Japan as , is a video game for the Super Nintendo Entertainment System published by Jaleco. The game features firefighters in realistic situations saving civilians in burning buildings, mining incidents, and industrial accidents. It was released on the Wii Virtual Console in Japan on March 1, 2011, in the PAL region on April 29, 2011, and in North America on August 25, 2011. "The Ignition Factor" is a 2D adventure where the player controls a firefighter through emergency situations in differing locations. Each level consists of multiple rooms, areas, or building floors