Obviously they can vary. For instance, the extreme is that the plug will not fire, no spark. The other is the wires are perfect and everything works great. In between are a few other things too. A weak wire could cause the car to buck or run rougher at acceration from a stop but seem to run smoothly at a higher rpm.
Any suspect on the wires and I would replace them. Could pay big dividends.
Wednesday, May 31st, 2006 AT 8:01 AM