2000 Mercedes Benz S430 Spark plug wires

Hi there,

Faulty leads are only part of the possible problem, you need to look at the complete tune, plugs, (do not use resistor type plugs) leads, compressions, air & fuel filters, vacuum leaks and ignition timing, also a scan to check for any unresolved faults will also be a good idea.

Mark (mhpautos)