What Are the Symptoms of Faulty Ignition Wires in a Car?
2 Answers
The symptoms of faulty ignition wires in a car are as follows: 1. Unstable engine operation or shaking: This can be caused by poor quality or aging of the high-voltage wires. 2. Single or multiple cylinder misfires, either persistent or intermittent: This may occur when individual high-voltage wires develop quality issues leading to poor conductivity or changes in resistance. 3. Abnormal ignition, weak engine acceleration, hesitation, or poor acceleration: During use, the conductivity of high-voltage wires may weaken, internal resistance may increase, resulting in reduced spark intensity at the spark plugs, weak ignition, and incomplete combustion. 4. Potential damage to other components: Due to quality issues or other faults, "electrical leakage" may occur, which could puncture other components, causing short circuits or open circuits. 5. Risk of fire: Electrical leakage, prolonged use, or overheating due to quality issues may lead to spontaneous combustion or fire hazards.
Symptoms of bad spark plug wires are quite obvious: the car won't start easily and requires multiple attempts to fire up. The engine shakes noticeably at idle, with vibrations felt through the steering wheel. Acceleration feels sluggish - the vehicle responds slowly when pressing the gas pedal, especially struggling during hill climbs. Fuel consumption spikes dramatically, jumping from the normal 8L/100km to over 10L/100km. The exhaust frequently emits black smoke with a pungent gasoline odor. Sometimes there's loud engine noise like a "ticking" sound inside the cabin. These signs indicate ignition system failure causing incomplete combustion. Get it fixed immediately, otherwise it may lead to cylinder misfires or catalytic converter damage, which would cost much more to repair. Regular inspection of spark plug wires can prevent these issues.
