Excess fuel from air compensator jets

After my carb rebuild, I installed them back on my bike without the rubber boots back to the air cleaner box. I started the bike and it ran strong but two of the carbs had an even flow of fuel comeing from the air compensator jets on the inlet side of the carb body. At least enough fuel to know that it was opperating correctly. I took the carbs back off the bike and checked if the float needles were sealing correctly by turning them upside down to simulate a fully lifted float, then blowing air into them I listend for any bleed by. Im pretty sure these two float needles are not fully seating but I am not sure if this is the full problem because Im not sure of the operation of the air compensator jets. All I can think is that they are not supposed to be spitting fuel sense they are "air" compensator jets. I looked at the float needles and they look pretty good to me. they are a little marred at the top of the rubber tip but they are very clean down toward the end where the tip would seal. Has anyone had a similar problem to this?

 

Float valves aren't very expensive, so replacing is your best bet.

Having said that, I found one that wasn't sealing when I went to set the float levels on my carbs. Was in a hurry to get them back on the bike and didn't want to wait for parts. I pulled the offending float bowl, pulled the float and needle and everything looked brand new except for a very slight mark on the rubber tip of the needle. I cleaned the float valve seat with a q-tip wet with carb cleaner. All that was on the q-tip was like soot, and not much of it. Still, the needle now closes flawlessly.

Next time I have the carbs off I'll have a replacement set of float valves handy and go ahead and swap them out.

Of course floats must to proper hight also.

 

I think what MiCarl said about float height is the critical part. Did you check yours by using the clear tubing method? IF not then one or more is either not seating or is too high.