03 cummins wont start need help!!!!!
 

My 03 cummins has stock everything besides, smarty, and newly added 120hp nozzles. tonight we installed nozzles, it ran for a good 20 sec or so, then I bumped the gas and barked it a lil, then it missed and shut off. after that it will not start. tried deleting dtc codes. The injectors have power, we also have fuel coming to the injector pump, but the problem we found is we have no fuel flow from the injector pump to the rails. what could cause this?! it has ran fine for months, now we put new nozzles on and its throwing a fit. we think it may be computer related, any advice would be greatly appreciated..

FCA on the back of the injection pump, unplug it and see if it starts, if it dosnt try another FCA