What are the symptoms of a faulty car ignition coil?

[VanessaLynn]

Symptoms of a faulty car ignition coil include: 1. Insufficient ignition energy leading to frequent carbon buildup contamination on the spark plug electrodes; 2. Open circuit or grounding of the ignition coil, resulting in no high-voltage electricity generation and failure to ignite; 3. Surface discharge of the ignition coil, with burn marks visible at the ignition discharge points; 4. Sudden engine stalling and inability to accelerate; 5. Engine misfire, potentially accompanied by noticeable abnormal noises at idle. The core components of the ignition system are the ignition coil and switching device. Increasing the energy of the ignition coil enables the spark plug to generate sparks with sufficient energy. To prevent damage, avoid exposing the ignition coil to excessive heat or moisture, refrain from turning on the ignition switch when the engine is not running, and regularly inspect, clean, and secure wire connections to prevent short circuits or grounding.