[malllard]

My motor will stall out while i'm driving not while idling . What happens is the motor will start to surge and stall ,when you try to pump the ball it will be soft. The motor will start right back up but once you get going it will stall again. The vent is open and I have tried 3 tanks each of which work until the fuel gets below about a half a tank . I just had this happen yesterday while hunting so I have yet to test my theory by topping off the tank . Do you have any theories to why this would happen . I have brought it the dealer and nothing ever seems to be wrong . Thanks for your help.

[Laddies]

The fuel pump lacks the vacuum to pump the fuel when it get low or there is a leak in the supply to the pump.