Fuel Pump not priming before starting car

[Rudenice]

I have a 95 318ti, 116k, 5 speed, car has been in storage for nearly 4 years. I replaced the fuel pump and filter, car started up but ran poorly. I replaced the old gas and added gas treatment, however with pump out of tank, it will not prime on the key switch before starting. But, when i attempted to start it, gas was moving and pump was working. Car will only partially start with starter fluid added. Can anyone give good advice on how to proceed. This is the third fuel pump - the new one was cheap and had a crack in the top (leaking gas), now I have a second used one from the junk yard.