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Bob, In general if you pull a plug wire away from the plug she fires but NOT if attached directly, thats caused by a partly fouled plug from excess gas (running too rich) or shes an oil burner or theres a plug problem. However, if its alllll llll new this gets a lil tougher. Id still suspect either that spark plug, or that plug wire or theres a distributor cap or rotor problem. Try to swap plugs n plug wires n see if its always on that same cylinder regardless which may narrow it down to a spark plug or plug wire??? If its still on that one cylinder only, them move on to a cap or rotor problem maybe. Is the cap clean n dry n not cracked or carbon traced or any chips or problems near that plugs internal pick up?? Is the compression near equal on BOTH cylinders??? Hows the valve lash on that cylinder??? If its ONLY that cylinder regardless of new plugs or plug wires and its NOT a cap or rotor problem, then Im back to a problem in that cylinder. Compression check, valve lash cheak, swap plugs n wires to see if its a plug or wire or its ONLY that cylinder that has the problem, insure the cap is the same at BOTH inner terminals. One last thing, you may wanna check the points gap on BOTH high cams ESPECIALLY the cam lobe that has the miss, a worn distributor shaft or bad cam lobe may not be opening the points high enough on that bad lobe!!!!! !!!!! If its NOT a cap or rotor or plug or plug wire problem and the cylindersh have equal compression THEN I THINK ITS A BAD DISTRIBUTOR. It may have worn bushings or excess shaft wobble and the points gap isnt same on BOTH high cam lobes. TRY TO GAP THE POINTS WIDER WHICH WILL ALLOW SOME SLACK N SEE WHAT HAPPENS John T
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