I think I'm having this problem right now on my 2009, with 13,000 miles on it. 100% STOCK!
But, I took off the carbs and took out both Pilot jets and both Main jets. ALL Jets are clean and i can see through the holes plain as day when held up in the sunlight outside!
I kinda blew out the carbs, I wasnt sure where to blow in/out with the air compressor, so i dunno if i got rid of any blockages!
-I drained all old gas (5-6month old gas with Sta-bil added last Fall). Gas tank now has 1 gallon of FRESH GAS. ***BEFORE I TOOK OFF CARBS I TRIED FRESH NEW GAS***
-The Carbs are clean, inside and out. I DIDNT have to clean them, but shot some carb cleaner into holes and areas that i figured. the float bowls area, no buildup anywhere, DIDNT need cleaning.
-The Diaphragms work like that diy video. smooth return/etc.
-I cannot see anything cracked or wrong with ANY of the gas/vacuum lines.
-Air filter is just fine too, NOT all dirty.
-When I move the carbs butterfly flappers open/closed, they seem to be very much (to my eyes) equally opening and closing. So "carb sync'ing" shouldnt be needed.
Anyother ideas?
Mind you, ATM the bike is still apart, so I havent put it all back together yet... until I figure out why.
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