Start over from scratch-replacing the injection is dead easy outside of the mess of removing the oil filter housing. I did a 617 one without any direction, it was simple and straight forward. Make sure the pump was installed at the correct timing using the numbers on the crank damper and valve cover off to verify TDC (cam lobes up on #1). Once it is on and the lines sorted start priming it, lots of pumping ahead of you! It should fire up right away. If it doesn't, do the valve adjustment, compression, TEST injectors (you MUST to be sure). Pour some MMO down into the cylinders and let it soak or even Seafoam engine treatment to help clean things up. Check timing chain stretch too.
Be sure to hook up the feed and return lines correctly going to the fuel tank at the filter housings.