You might need to clarify your bench test of the acellerator pump and your on the bike diagnosis of it not working as this doesn't really make too much sense. . . . The accel pump "bowl" gets its gas from the #2 carb bowl. There is a hole in the side of the pump bowl that supplies the fuel. The carb bodies look pretty much the same except the brass plug for the #2 carb has a hole in it to supply the fuel from the accell pump to the nozzles. The oring on the #2 bowl surface seals this connection. You can certainly set the carbs on the bench, connect a fuel supply to the carb fuel inlet and then whack open the throttle a few times by hand to observe whether or not fuel is being sprayed from the brass nozzles near the choke plates on the filter side of the the carb bores. You may need to prime the pump a bit. You can also adjust the clearance between the tang on the throttle assembly and the pump actuation rod so make sure that is to spec. You say you have the correct amount of fuel in each bowl but how do you know what the correct amount of fuel is?? Perhaps there is a spec for this but I have never seen it. While you have the carbs off of the bike and a temporary fuel supply set up you should probably do a reality test of the actual level of fuel in each bowl. Empty the bowls, level the carbs, (a padded vise works well) attach clear tubing to the overflow spigots, hold (tape to the cover cap works well) the clear tubing up along the carb body, supply fuel to the carbs, open the drain screws to each carb bowl. You will see the actual level of fuel in each carb in the clear tubing. The fuel level should be just a bit below the carb to bowl seam and it should be identical from carb to carb. . . . .Assuming you see a healthy squirt of fuel coming from each nozzle on the bench then there is no reason why (assuming that you have installed the throttle cables correctly and that your fuel supply is sufficient and clean. . . .did you clog up your cleaned carbs with unfiltered cruddy gas from your gas tank?) that the nozzles shouldn't spray fuel while mounted to the bike. With your air filters off you can easily see if the nozzles are squirting. Again you may need to prime the pump a bit. If your fuel level in the #2 bowl is set too low then perhaps when the bike is leaned over a bit the pump may not work. The fuel level "reality test" should show you if you have a problem there.
