With an electric fuel pump there is 'usually' a safety circuit attached
to the oil pressure switch. When the oil pressure switch sends a
signal of low oil pressure the switch is closed and the ignition
circuit is 'out' of the circuit --- shuts off the fuel supply..
To check to see if the oil pressure switch is operating or not, (as the
other poster also added) make a direct temporary 'jumper' cable from
the Batt. to the feed for the electric fuel pump and see if this doesnt
remedy the matter; if so, then correct the fault in the oil pressure
switch (replace) or its wiring.


In article , Janet Quick
wrote:

It's an Atomic 4 with gas motor

When the ignition switch it one, the fuel pumps runs
Once the motor starts, the fuel pump no longer runs

This is the second new fuel pump and a new filter

Does anyone know what might be going on here?

Thank for any help