At wide-open throtle the engine will suddenly loose power. If you back off the gas it will pick back up. If not, it shuts off completely but it will start right back up and run fine as long as it's not wide open. I have ruled out the gas tank itself so what do I check next? All the gas lines are the correct size.<br />No Alarms; NO Restrictions; I'm thinking fuel VRO pump or some kind of diaphram problem. Are there any diaphrams that are not in the fuel pump itself? The Primer Bulb is brand new.