What are the symptoms of a car misfiring?
2 Answers
Here is a detailed introduction to the symptoms of a car misfiring: 1. Shaking: The most obvious symptom of a misfiring engine is shaking. During operation, because one or more cylinders are not working, the engine's balance is disrupted, causing a noticeable drop in engine speed. The power output during operation becomes uneven and intermittent, leading to significant fluctuations in speed. In addition to feeling the misfire in the engine, it can also be observed on the tachometer, where the needle will fluctuate up and down. 2. Increased fuel consumption: After a misfire, fuel consumption will rise significantly. Unburned fuel in the engine is wasted, and even if the engine performs the same amount of work, its power output will noticeably decrease. When this fault occurs, it can be detected through the car's dashboard, as the engine warning light will illuminate. In such cases, it is recommended that the owner take the car to a repair shop or a 4S store for inspection and repair.
I experienced a misfire in my own small car before, and the whole vehicle shook violently, especially when idling at a red light—it felt like sitting on a trampoline. The steering wheel vibrated noticeably in my hands. The power dropped significantly, and the car jerked when accelerating, struggling especially when climbing hills. Fuel consumption also skyrocketed. After inspection, it turned out one cylinder wasn’t firing, likely due to a burnt spark plug or a faulty ignition coil. If not repaired promptly, engine damage worsens, even leading to black smoke and excessive exhaust emissions. After fixing it, I recommend regularly replacing the air filter and keeping the engine clean to prevent similar issues. Regular maintenance is key—don’t let small problems escalate.
