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Discussion Starter #1
Hi everyone, i have a ‘91 vulcan 750 and I’d been trying sync the carburetors. I’ve already cleaned them but im been messing up whit the screw between the carburetors, and when i started it up I realized that it was idling very bad, the front carburetor it seems to be ok but, the rear one, is backfiring when down shift and popping when idling and some times when the bike is at full warm and i ride about 10 miles she try to cut it off but never cut off. Please Help is my daily drive to work.!


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Discussion Starter #3
Thank you!. One more thing, today when I arrived from work, i started my bike and start to screw in that screw whit a 7mm wrench and i noticed that the popping has ended but the exhaust was a little cold than font when i put my hand near to the back of it, and it start to sound like if where a steam machine.


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