How Can I Be Sure That The Ignition Coil Is Broken?

The method of determining the ignition coil damage is as follows:
1. The body shakes obviously when the car is idling.
2. There is an obvious interval in the waste air flow discharged from the vehicle; At the same time, the exhaust pipe shakes violently, and the "sudden" sound can be clearly heard.

Here's more about ignition coils:
1. The core components of the ignition device are the ignition coil and the switching device. By increasing the energy of the ignition coil, the spark plug can produce a spark of sufficient energy, which is the basic condition for the ignition device to adapt to the operation of modern engines.
2. There are two sets of coils in the usual ignition coil, the primary coil and the secondary coil. The primary coil uses a thicker enameled wire, usually with an enameled wire of about 0.5-1 mm around 200-500 turns; the secondary coil uses a thinner enameled wire, usually with an enameled wire of about 0.1 mm around 15000-25000 turns.