Havin probs with fuel pump not coming on

The only way for it to prime is to remove a fuse from the fuse box and refit with ignition on primes up then you can start car runs for a little then dies as pump don't run?????

The fuse is marked as weber something in the book

I'm thinking its a fuse box issue its a m8s car so thats all the info i have.
fuel pump and engine running relays have been replaced

Any ideas please people

Paul