What are the signs of a failing car ignition coil?
2 Answers
The signs of a failing car ignition coil are: At idle, the car body shakes noticeably, and when observing the exhaust pipe outlet, the exhaust gas flow shows obvious intermittency, accompanied by severe shaking of the exhaust pipe, with a clear "popping" sound audible. As gasoline engines develop towards higher speeds, higher compression ratios, greater power, and lower emissions, traditional ignition systems no longer meet the requirements. The core components of the ignition system are the ignition coil and the switching device. Increasing the energy of the ignition coil enables the spark plug to generate sparks with sufficient energy, which is a fundamental condition for the ignition system to adapt to the operation of modern engines.
As an experienced driver who has driven many cars, I remember one time when the ignition coil had issues. The car started fine, but it shook noticeably while driving, feeling like the engine was jumping. Especially when accelerating uphill, the power couldn't keep up, and fuel consumption was much higher than before. The engine warning light on the dashboard stayed on constantly, and sometimes the car would suddenly stall at a red light, which gave me a scare. Later, during repairs, it was found that the aging ignition coil caused the spark plugs to misfire, making the whole system run unevenly. If I had noticed these symptoms earlier, replacing the parts would have been much easier. Now, I always pay attention to how the car reacts to avoid major issues.
