try taking the nutt off the bottom of the fuel bowl it has a small
orfice in it that fuel goes thru.you can run a small tag wire thru it
and then blow it out. if you have the electrical devise on the fuel bowl
it may have gone bad .you can screw it out ,ground the body and hook
posative 12 volts to the wire,the plunger should move in,if it doesnt
then its bad. these two causes are most likely on your engine.lucas