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Old Jul 1st, 2006, 11:31 AM   #1
beau44
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I have a 1980 FX, 80 incher, stock Keihn carb with an andrews pump on it, the bike has a Sifton cam in it but not sure what the number is, also has 2 in drags with a bolt and washer baffle in each pipe. I get a cough out of the carb when running down the road, its a nuisance, have checked the idle mix and all but nothing seems to correct it, planning on an S&S this winter but if anyone has an idea shoot me a line.


ride safe all and take care
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Old Jul 1st, 2006, 11:46 AM   #2
aaron
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What jets are you running?
Both main and intermediate. It sounds to me like the intermediate jet may be a bit too lean.
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Old Jul 1st, 2006, 02:13 PM   #3
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it sounds ALOT like a lean mix.......
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Old Jul 3rd, 2006, 03:41 PM   #4
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Not sure what size they are, will have to get back to ya, jus know that the main size was suggested by a bro who has his own shop and works on a lot of scoots, both new and old, his is a ole pan he rides everyday, never have changed the intermdiate jet, lol, jus took the carb off today and didnt even look
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Old Jul 26th, 2006, 01:46 PM   #5
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Mine was doing the same thing, but a rejet and hight flow air cleaner took care or it.
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Old Jul 28th, 2006, 07:11 AM   #6
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I upped the pilot jet two sizes, from a 74 to a 76 , that took care of the problem, already have a freer flowing air filter , thanks for the reply
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