What is the reason why the motorcycle motor coil is easy to break? Generally speaking, there are two coils on the motorcycle, namely the low-voltage ignition coil of the motorcycle magneto rotor installed on the engine and the high-voltage ignition coil (high-voltage package) fixed on the frame. The possible reasons for the failure are: 1. The circuit between the coil and the motorcycle ignitionlighter is short circuited, causing excessive current ----- burning. 2. High voltage electrical short circuit (low possibility) 3. The motorcycle igniter has internal failure (high possibility). Replace the igniter. If the igniter is confirmed to be OK, it is the internal ignition charging coil of the generator that has a problem. Change it directly to a DC igniter. 4. The voltage is not correct. The low voltage of the coil and the igniter is different. If you mix them, you can either burn the igniter or the motorcycle ignition coil.