What Causes Engine Misfire in Cars?

[AngeloAnn]

Engine misfire in cars is caused by: 1. Air leakage due to poor sealing of pistons, cylinder walls, valves, or valve seats, leading to excessively low cylinder pressure; 2. Severe burning of distributor cap contacts in the ignition system; 3. Air leakage in pipelines allowing air to enter the cylinder through leaking pipes, causing the engine to malfunction; 4. Excessive carbon buildup due to low heat value of spark plugs, leading to spark plug leakage, weak sparking, or non-functioning spark plugs; 5. Clogged fuel injectors with carbon deposits preventing precise injection and atomization, which can easily cause the injectors to stick and result in engine misfire.