lack of fuel
i have a holley 750 mech. that after i take it apart and put back together it runs great on the first two runs down the street then,only the front bowl runs out of fuel...and motor dies.can't restart because no fuel will re-enter front boel.back bowl stays at proper level.If I take the carb apart and go through it it runs great again untill third blast and same thing happens.I have replaced the needle and seat,checked for trash in carb...same problem.I have a holley mech. pump,an in line fuel filter,stock fuel line and gas tank.any ideas ???????