One would be led to think that you are not getting enough fuel to or through the carburetor. Feed the float bowl via a gravity tank, and if that works, your pump or lines are dysfunctional. When running on a gravity feed, the pump and fuel tank should be pumping the tank empty at a pretty quick rate, so have a catch-can ready just in case the problem is within the carb.
Doing that will at least point to the carb or fuel delivery system.
tom
Doing that will at least point to the carb or fuel delivery system.
tom
