QUOTE(J P Stein @ Jan 4 2010, 07:52 PM)
I simply pull (& replace ) plug wires on a running engine till I find the one that is not firing. I can find the culprit in a minute or so on my motor. Don't try this, children, without having your plug wires in top notch shape at all times. Given the opportunity, electricty will go to ground thru you.
This is pretty basic stuff. I has a dead hole in the 2006 Parade staging lanes.
Had a new plug gapped & in & the motor back to a purr in about 3-4 minures. Had it been a plugged idle jet, it would have taken another couple minutes. A Porsche guru (a real one) was watching this opperation. He said "why are you using a BP7 rather than a BP6?" "It runs better on 7s" says I....while screwing in the plug.
Look J P...with deference to all your experience, and knowledge, I would like to say the following: DO NOT USE THIS TECHNIQUE (above) if you are using a high output MSD, or similar output ignition system. there is enough voltage and amperage to stop your heart. Certainly enough to have you swearing awhile, and I promise that when you do ground yourself you won"t try this technique again.
murray