Babies no well II
connecting the fuel pump on a direct feed primes the engine and she fires,,, bur when live feed disconnected engine dies of fuel starvation
Isn't your pump meant to have a live feed all the time so that it can feed the injectors with fuel? It's gonna stop if you dis-connect it.
Maybe your OE live feed is, immobilised or a fuse or relay in the fuel pump circuit is not function correctly….!