1983 6.2 Diesel IP lines

[Silverado91]

Hello everybody, new to the forum and need help,
I have a 6.2 I'm installing in my 1991 3500 and there's 2 rubber lines that run from the injection pump out under the back of the intake toward the passenger side, what exactly are those? They've been cut so I need to know what they're for. Thanks in advance!

[DmaxMaverick]

Welcome aboard!

One is fuel supply, from the fuel manager (filter). The other is the fuel return (to the tank). The line that goes in the center of the injector lines is the supply. The other ties together the returns, from the injectors and the top line on the IP, to the tank.

[Silverado91]

Thanks DmaxMaverick, the person who pulled the motor literally cut almost everything. I knew there was a return that's right above the fuel pump that goes back to the filter, correct? and also this motor is going in a truck that use to have a gasser in it so I'm having to run new lines anyways