What are the symptoms of a faulty car engine ignition coil?
3 Answers
Ignition coil failure symptoms: Generally, the number of ignition coils corresponds to the number of cylinders in the engine. If an ignition coil is severely damaged, causing insufficient spark from the spark plug to ignite the air-fuel mixture or complete absence of spark, the engine will experience a misfire. The specific symptom is engine shaking: Due to the imbalance in power generation caused by the misfire, the engine will exhibit severe vibrations during operation. If there are too many misfiring cylinders or two adjacent power-generating cylinders misfire simultaneously, the engine is highly likely to fail to start normally.
My car had a problem with the ignition coil a while ago, and it felt really unpleasant to drive. At first, the engine kept shaking, especially when idling at red lights, making me dizzy. The acceleration was sluggish too, as if I was dragging a rock when stepping on the gas. The fuel consumption kept rising, costing me extra money on gas every month. Later, the engine malfunction light also started coming on frequently. If I had ignored it for too long, it could have been dangerous if the car suddenly broke down on the highway. So I quickly took it to the repair shop, and sure enough, the faulty coil was causing irregular spark plug ignition. After replacing the coil, the car immediately regained its smooth and powerful acceleration. Now, I check the engine condition every week to avoid small issues turning into big troubles.
I'm particularly sensitive to signs of ignition coil failure while driving, as it can cause the engine to run unevenly. From my experience, the car lacks power during startup or climbing hills, even emitting black exhaust fumes that are unpleasant. Acceleration becomes as slow as a turtle crawling. At idle, you might feel slight wheel vibrations, and the dashboard warning light glows red, as if reminding me to address the issue promptly. If left unrepaired, the entire ignition system could fail, causing the engine to stall mid-journey. I recommend fellow drivers regularly check their spark plugs and replace aging coils promptly to avoid unnecessary expenses on further repairs. Safe driving is the top priority—don't hesitate if you spot an issue.
