Of all the forums that could answer that problem for someone in America, I think the last one I would think of signing up to for advice on that would be a U.K. based plumbers forum. Is this the return of you know who?
it could be a real plumbing tap, somehow got sucked through the carb - i'm sure american monster muscle trucks still use carburettors, no shortage of fuel, all actively encouraged by the new environmental minister - drill baby drill