no powr

my fuel pump went out on my truck and since it
was replaced it don't start unless I manually
dumpgas in the intake . after it warms up it will
restart on its own. The main problem is I have no
power . I have to slowly press on the gas to get it
to rev up. If I try to give it gas too fast it starts to
sputter and die. Relay fuse, pressure regulator
andf fuel filter all replaced. And it runs 60lbs of
pressure from pump. So..... Really not sure where
to go from here.