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Bike only running on 2 cylinders

Pelkekal

Forum Newbie
Hey everyone. I’ve been having trouble getting my 1978 GS750 to run right. I have cleaned and rebuilt the carbs, installed a new petcock, checked for spark, checked coils, and adjusted the carbs decently. The problem I had before I did all this was that my bike seemed to be running only on the inside 2 cylinders. The middle 2 exhaust pipes would get scorching hot and the outside 2 were cold to the touch. After all this work I get the same result. I’m about to just take it to a shop and let the pros handle it. Any suggestions on what it could be?
 
Does it have points and condensors?

The fact that 1-4 aren't working seems to be no spark on that coil.
 
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