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have you turned the key on and sucked fuel all the way through the system to the return line with a vacuum pump? Key needs to be on when doing this to open the flow valve in the pump.
After that, you will need to bleed the injector lines while cranking, a two person job. Crack a line, crank until it starts spitting, close it up again. Repeat with each line until it runs, it may start after you get the third one bled (if your timing is correct)