31-03-12, 07:32 PM
Red, the value of the plug cap resistance isn't critical. The purpose of the resistor is to damp out any high frequency oscillation that could cause interference to radios. 5k ohms will do the job just as well as 10k and it'll have no effect on the spark, but if one of a set is a fair way out from the others it might indicate the resistor is breaking down.