What are the signs of a faulty ignition coil?
2 Answers
The main precursor of a faulty ignition coil is the weakening of the spark plug's firing capability. As the spark plug's firing capability weakens, the combustion of the engine's combustible gas mixture will be affected, leading to adverse reactions such as increased fuel consumption and reduced power. The weakening of the spark plug's firing capability can cause incomplete combustion of the combustible gas mixture, which in turn produces a carbon-like substance called carbon deposits. As a core component of the engine's ignition system, the car's ignition coil is responsible for intermittently converting the vehicle's low-voltage electricity into high-voltage electricity. If the engine does not have the high-voltage electricity generated by the ignition coil, the combustible gas mixture in the cylinder will not be ignited, and the engine will not be able to function properly.
I've seen quite a few signs of a failing ignition coil. The engine shakes violently, especially at idle or low speeds, making the whole car tremble like it's caught a cold. Acceleration becomes noticeably sluggish—stepping on the gas feels weak, and overtaking becomes a struggle. Fuel consumption suddenly spikes, with the gauge dropping rapidly even when driving minimally. Additionally, the check engine light may illuminate, indicating an electronic system issue. Sometimes, the car struggles to start, particularly when the engine is warm. Ignoring these symptoms can lead to spark plug damage or more severe engine problems. I remember once when my car shook oddly while driving; I rushed to get it checked. After replacing the ignition coil, it ran smoothly again. Regular maintenance and inspections of related components can prevent these issues. If you notice shaking or poor acceleration, don't delay repairs.
