How often is the ignition coil replaced

The ignition coil, as the name suggests, is the most critical component of the engine that supplies power to the ignition process and ignites the compressed fuel mixture. The most obvious feature of ignition coil failure is cylinder missing. There may be obvious popping sounds at idle, which are most noticeable when touched by hand on the exhaust pipe, accompanied by severe engine shaking. When driving a car, the higher the gear, the more noticeable the jerky feeling when refueling. Smooth refueling is slightly better, and the feeling of stalling is even more noticeable when refueling heavily. Of course, the car itself is clearly aware of its own problems. So, convenient car drivers can check the fault codes in the on-board computer.

The simple explanation of the ignition coil is that it allows the spark plug to "generate sparks" and ignite the component that ignites the mixed gas inside the cylinder. In fact, it is a transformer responsible for converting the low voltage current of the vehicle into high voltage electricity. Normally, each cylinder is equipped with a set of ignition coils and spark plugs, and the ignition coils are usually replaced at 100000 kilometers or even longer.