Ignition Coil Failure Phenomenon and Practical Inspection Methods

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What are the symptoms of a broken ignition coil?

1. The cylinder corresponding to the ignition coil will not work, causing the idling speed to shake and the accelerator to be weak, unable to add oil, and the fault light is on.

2. The coil is leaking after clicking, sometimes it may or may not shake when idling, but it must shake and be powerless when the accelerator is on.

3. When accelerating, sometimes the power outage causes the acceleration to shake.

4. When the cylinder is missing at the same time, the gasoline and air mixture in the cylinder cannot be ignited and will be discharged from the exhaust pipe. But in fact, the temperature of the exhaust pipe is very high. When the mixed gas reaches the exhaust pipe, it will burn due to the high temperature of the exhaust pipe. At this time, a large amount of heat generated by the combustion will block the three-way catalytic pores in the exhaust pipe, resulting in three Metacatalysis fails.

5. if the ignition coil is broken, the engine will vibrate violently, just like a tractor; when the fuel is supplied, the car is weak; it shakes, and the high-end gear cannot go up; if it is broken, the fault light will be on; , The engine vibrates when idling, and the exhaust gas smells great.

the practical inspection method for ignition coil

How to Inspect?

After starting the car and opening the engine compartment, the engine vibrated abnormally, but at this time we don’t know which ignition coil is broken. How to judge? Very simple.

Pull out the ignition coil one by one, if it is good, the engine will vibrate more or directly shut down, if it is bad, the engine remains same, do you understand?

How Ignition Coils Work
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The Structure Of The Ignition Coil
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