D-3400 fuel system

In the course of removing the mill from our 212 grader, we noticed that the tube assem. from the tops of the injectors runs down past the fuel filter, through a clip near the bottom of the crankcase and stops. I don't see any remains of a disconnected line that might have been attached to it, nor do I see any open ports anywhere. Where is this line supposed to go? Thanks, Fritz

It goes to atmosphere, I have seen them t'eed back into the supply line, but if an injector fails it is possible to put compression gasses back into the fuel system, so leave it open, you should get hardly anything leak out of it anyway.

Way back when...that line was rerouted (via Cat) into the transfer pump suction as the result from owner complaints