Is this a electric fuel pump... set the float with the pump on for a start.. the PV shouldnt be open IF the throttle blades are low enough(which by now you most likely have them opened up to try to keep it running) so try plugging the PV port till you get it running.. put in another set of plugs... turn your crank to about 20*BTDC(on the compression stroke) and check to see if the rotor is just at the leading edge of the cap lug for the plug) then give it a try
