Hard to kill once running; suggests a massive air leak (usually at 1 of 2 orings at prefilter) or a clogged tank screen maybe.
Follow the fuel path and look for bad seals especially 1-3.
fuelflow.JPG (image)
Check the routing of the fuel lines. People have reversed them before after working on them. Will idle but not accellarate usually.
Why are you using an electric pump? Veg setup? The lift pump works by creating suction and pulling fuel up through line 3, line 4 becomes pressurized and then goes back to the IP and finally to the inj's.