ORIGINAL: wingstrut
Question, When using an electric pump should you block off the pulse pump, or vent it to the atmosphere.
I usually cut it (the airline), install an inch long piece of 2-56 rod to re-connect the tube visually and the cut/drill a small breather hole into the tube, right after the pump. That way I have no pressure buildup, maintained the scale look and keep grime from entering the carb.
-Götz