What are the symptoms of faulty ignition wires in a car?

2 Answers
StJoseph
07/29/25 3:17am
Engine operation becomes unstable or experiences shaking. Additional details are as follows:1. Misfires in single or multiple cylinders, or intermittent faults: This may occur when individual ignition wires have quality issues leading to poor conductivity or resistance changes.2. Abnormal ignition, resulting in weak engine acceleration, overheating, or poor acceleration: During use, if the ignition wires' conductivity weakens and internal resistance increases, the spark intensity provided to the spark plugs decreases, leading to weak ignition and incomplete combustion.3. Potential damage to other components: 'Leakage' caused by quality issues or other faults may puncture other components, potentially causing short circuits.4. Risk of fire: Leakage, due to quality issues or prolonged usage leading to overheating, may cause spontaneous combustion or fire hazards.
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VonGiselle
08/12/25 7:09am
I've been driving this old car for over a decade, and the symptoms of faulty ignition wires are too obvious to miss. The engine shakes like a sieve at idle, and acceleration becomes sluggish - you can stomp on the gas pedal forever but the speed just won't pick up. One rainy morning during startup, I heard crackling discharge sounds and the check engine light immediately came on. Fuel consumption has skyrocketed too - where I used to get 500km per tank, now it's barely over 400km. The worst was when the car suddenly stalled during a low-speed turn, almost making me hit the curb. I discovered the aging wires were leaking electricity, causing uneven spark plug ignition. Now I make it a habit to visually inspect the wiring regularly for cracks or burn marks - catching problems early prevents them from becoming major repairs.
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