How to Determine if the Ignition Coil is Faulty?

[HaileyFitz]

Methods to determine if the ignition coil is faulty: 1. At idle, the vehicle body shakes noticeably, and the exhaust gas flow from the tailpipe shows obvious intermittency, accompanied by severe shaking of the tailpipe; 2. The shaking sensation disappears when the engine speed exceeds 2500 RPM; 3. Open the engine hood and observe the running engine—if there is significant shaking that clearly deviates from normal engine operation, with large amplitude vibrations. As gasoline engines evolve toward higher speeds, higher compression ratios, greater power, lower fuel consumption, and reduced 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 sufficient spark energy, which is the fundamental condition for the ignition system to adapt to modern engine operation.