have noticed that bike runs perfect until I have been riding for around 45-1hr, then if I am sitting in traffic it will sometimes stall out and will stumble when taking off, I have read stuff that it is common but no one had a fix I have put new plug and air filter in bike. Should I try seafoam? or is there a better solution out there? thaks for your help.

 

Oh bump this up! Having same issues on the 94 900

 

could be any number of things. Its not a bad idea to run some seafoam through it anyway, so I'd start there.

The other possiblities I can think of are: fuel pump not keeping up once its been running for awhile. A bad or weak coil can cause this once its warmed up. Also, check your rectifier. When they first start to go bad, its when they are hot that it makes itself known. I would pull the plug on it to make sure its not melted in anyway. Also, do a voltage check on the bike when its just warm enough to start to idle at the proper rpm. then again once its warmed up after a ride.