i think i know what it is just wanted everyones opinion.its a 03 dyna.it running like crap.it runs fine with the choke on or under hard throttle,but running constant speed it spits and sputters,also i havent changed anything since last year.this was also the first run this year.whats your opinion,thanks db

 

clean the carb sounds like the slow jet is gummed up .

 

When I get my carbed 02 out for the first ride of the season mine also balks at first. Siphon (oops) remove the old gas, dump it in the ol ladys car. Fill with fresh gas and 3 ozs. of Seafoam to clean out the carb and cylinders. Make sure you push in the enrichener when the engine warms or as it warms up. Put fresh plugs in it helps also. When you store next winter don't forget the Stabil. Good luck.

 

Second that, probably old gas, put it in "your" car and dilute with new in a bigger tank.

 

I had the same problem with a 95 dyna put in fresh gas and some seafoam and new plugs and wires bike ran like a champ after that.

 

i was thinking it was an exhaust gasket leaking.it has new fuel in it now,i did a gas tank swap recently