ok it is getting fuel cleaned the tank and lines ,It starts fine and will run pretty good if the choke is pulled out about half way,so I think that is an air fuel mixture trouble I am going to check the intake man. to see if I am sucking air there then work my way up to the carb.I have at one time it ran great idle smooth hit the throttle and it did great. thougth I had it , that is when I shut it down and waited 20 min. and started back up then it started to doing what it is doing now.there my by a small check ball in the well of the accelrating pump stuck.from what I have been told.