Other symptoms of poor spark plug wires

As we have already said, the main symptom will be "unstable" engine operation, that is, something similar to "now it works fine, now it seems that I am a jerk". This symptom is more pronounced during the acceleration phase, sometimes at idle, and sometimes it may be accompanied by vibration.

Hot spots or molten parts in the cable and nearby metal areas.

Interfering with other devices. Due to the high voltage of the equipment, the possible derivation of the cable may affect other electrical systems, mainly radios and stereos, capable of hearing a hum that changes with the rhythm of the engine speed.

Electricity loss and increased consumption. Just like our spark plugs are dirty or their air gap or "gap" is not properly adjusted, defective cables can cause poor sparks and impair proper combustion.