Causes of misfire in car. Feb 19, 2026 · An engine misfire happens when one of the cylinders in your engine fails to function properly. This raw gasoline enters the exhaust system, where it can reach the catalytic converter. If you think you might have a misfire, keep reading. Continued driving can lead to severe engine damage, including catalytic converter failure from unburnt fuel, or even complete engine seizure if the coolant leak worsens and causes overheating. It’s strongly advised not to drive your car extensively with a misfire caused by a coolant leak. . When you have a misfire, the engine will run off balance, creating a powerful vibration through the body of the car, and the amount of power the engine can produce will drop significantly. We’ll tell you exactly what a misfire is, how to tell if you have one, and the most common causes of the problem. This can result in poor fuel mileage, rough idling and possibly cause the check engine light to come on. The immediate concern is the unburnt fuel exiting the misfiring cylinder. gulnfs jbaxihp twln ofd cmkjsdff ixdamxy hdnk jncdq goswm bpkz