Spark plug wires, also known as ignition cables, are a key part of the ignition system. Car engines that have a distributor or remote coil pack have spark plug wires that transfer the spark from the coil to the spark plug.
What are the symptoms of bad spark plug wires?
The following are common signs that your spark plug wires have issues.
- Visible Damage on the Spark Plug Wires. Spark plug wires may start to dry out over time, so look for cracks in the insulation. ...
- The Engine is Idling Rough. ...
- Engine Hesitation. ...
- Engine Misfiring.
Do spark plug wires really make a difference?
There isn't any performance to be gained from spark plug wires, just better build quality, which gives you not a better spark, but rather maintains an appropriate spark for more miles/years before their performance degrades to the point of needing replacement.
