Try rigging up a gravity feed gas can to see if you can get the engine running that way. The original suggestion I made about filling the float bowl through the vent tube was to get enough gas into the carb to make the engine run a little- - - - -maybe long enough to get the pump working.
Do whatever it takes to make the engine run for a minute or so- - - - -filling the float bowl with a syringe, gravity feed tank- - - -something. Then you can make an educated guess about whether or not the pump will work. As long as you're guessing about it at cranking speed, you're never going to make any progress.
Jerry
Last edited by Hotrod Lincoln; 01/02/2009 3:58 AM.