Yes, but isn't it still going to flood the engine while your pumping it? True the needle valve will restrict the amount past the N.V. but with out turning the needle valve in all the way to shut it off during fueling some fuel must still enter the carb barrel. Is it so small an amount that it doesn't matter? Have you tried this and it works without flooding, cause if it does work it sounds like a good idea. I may bench test this on my engine test stand where I can easily see whats happening with everything. Next time I run an engine I'll give it a go.