What are the causes for fire coming from the exhaust? How does exhaust fire? How can some vehicles, especially sports cars, produce flames out of their exhaust ?….?
Unburned fuel has been ignited by a flame coming from the car’s exhaust.
This is how I would explain it:
An adequate amount of oxygen is needed for an internal combustion engine that uses gasoline to burn. A throttle controls the oxygen flow inside the engine. The throttle opens fully when the accelerator pedal is fully depressed. Fuel injections respond by injecting additional fuel to equal the amount of oxygen. The ECU can be alerted by sensors to detect this condition. The throttle closes when your foot is abruptly removed from the accelerator pedal. The combustion chamber is empty of the fuel and air. The excess fuel in the cylinders doesn’t burn completely because there isn’t enough oxygen. It is thrown into an exhaust system. It is ignited here by heat and thrown out the exhaust pipe with an explosion.
If the vehicle isn’t modified, ignition from exhaust can’t be achieved in vehicles equipped with catalytic convertors. The catalyst serves the purpose of re-burning the fuel that is thrown into exhaust systems. Carbureted vehicles have a higher likelihood of ignition from exhaust. Or, special modifications are made. Cancelling the catalyst is used to replace the exhaust system. The vehicle can control the button that sends fuel to the exhaust. For better ignition, a spark plug can be attached to the exhaust.
Flamming from the exhaust can cause significant damage to the engine or exhaust system and may also ignite plastic parts, such as bumpers.
