What are the symptoms of a faulty igniter?

[OJune]

The symptoms of a faulty igniter are as follows: 1. Sudden engine stall when using the igniter: There is no obvious pattern, and the issue is resolved after replacing the breaker points. This is usually caused by poor contact in the igniter circuit or damaged wires grounding. 2. Unstable braking and other phenomena after prolonged driving: The condition returns to normal after cooling down for a while, and this does not occur with breaker points. This is typically due to high-speed misfiring in the igniter chip, requiring igniter replacement. 3. Unstable idle speed during startup and severe engine shaking when accelerating: Sometimes accompanied by backfiring from the exhaust pipe, with no improvement after adjusting the ignition timing. This is generally caused by reversed connections of the sensor's red and black wires. 4. Difficulty starting the car in cold weather when using the igniter: Normal starting with breaker points, but abnormalities can be detected using methods like push-starting or towing. This is usually due to excessive sensor gap. If the gap is normal, observe whether the starter motor rotates properly during startup. If the rotation is too slow, it may be due to starter motor issues, low battery charge, or poor wire grounding.