Fuel in oil

[Joker0916]

New reman injection pump. Had all 6 injectors rebuilt. Fuel was dripping from stop solenoid so I replaced it. I didn't have a inch pound torque and wasn't sure if pump was tight enough. Tightened it more and it got worse. I have dye tested 4 times. Couldn't find anything up top. I got a used IFSM and now have torque specs and a inch pound torque wrench. Does anyone know what the small fuel line on the IFSM goes to? It is under the stop solenoid on the right. It goes to something mounted on the block behind the fuel filter. I blew air in that port and it goes to the center of the fuel filter. The new one must be from a older engine. It does not have it. Not sure if It will work or not. Can that line hook somewhere else, or be plugged?