Fuel filter gasket
not seating properly.
to start is stored between filter and pump. During off time, air leaks
in, bubble forms inside top of filter. Restart, run for a few minutes, bubble gets to pump, engine
stops. Prime run, run all day. Stop overnight, air sucked back in, and repeat..
Check you have not got two rubber gaskets installed by mistake. You will not find an air leak with tissue paper, air molecules are smaller than diesel
, air will get in when drips wont get out.
Re-seat your filters, esp, secondary one, and if it has a nut at the top, (not spin-on) check that gasket/washer.