Alternately, an electric spark ignites the fuel. This spark, via the spark plug, ignites the air-fuel mixture in the engine's cylinders. When the piston rose close to TDC, a spark ignites the fuel. It ignites readily, burning with a smoky flame characteristic of aromatic compounds. He fires a bullet from the gun, which ignites the gas. The compression stroke is intended to compress the products before the flame ignites the mixture. The wildfire ignites and destroys the Great Sept, killing everyone inside. If the gas is flammable, the mixture ignites. Powdered thorium metal is pyrophoric&colon; it ignites spontaneously in air. The diesel engine fuel auto-ignites due to compression ignition, and then ignites the gaseous fuel. During the song's chorus, fire ignites behind them. His depression ignites the anger in him and increases his thirst for revenge. However, an arsonist ignites the fire, trapping Mo-ne and the employee inside. Bullseye narrowly escapes as Moon Knight ignites the explosives. Nolan then ignites nearby explosives with a flare gun, killing the Grabber.