What are the symptoms of a broken ignition coil?

One is that the body shakes obviously when idling. Observing the exhaust pipe opening, the exhaust gas flow from the car has obvious intermittent, and at the same time, the exhaust pipe vibrates greatly, and the 'sudden' sound can be clearly heard.

Second, during driving, when the speed is below 2500 rpm, the body shakes obviously and the acceleration is weak ; When the speed exceeds 2500 rpm, the jitter disappears.

Third, open the engine cover, observe the running engine, and find that the engine has obvious vibration. This kind of jitter obviously does not belong to the jitter in the normal working state of the engine, and the jitter amplitude is very large.

If only one ignition coil fails, the other three cylinders work normally, and reluctance to drive in an emergency is not a problem. But it is very unfavorable to the engine, base and connecting parts of the car. An auto mechanic at a Bora designated service station suggested that the owner temporarily stop using the vehicle with a lack of cylinders. If the ignition coil of more than 1 cylinder is burned, it is recommended to stop driving immediately.