Your waiting on parts that have zero to do with a running healthy motor…The hose is off the top of the injec pump because GP attempted to make it run,t hey get more money for running trucks.
while you may get fuel from the over flow, does not mean the pump is any good. you will get fuel from the
that drainback as the cold advance is active and that’s when that drain is active.
The most common failure from the auction is the pump shaft is sheared and the plungers are not working, this can be witnessed by no fuel at the injectors or pull the top of the pump and have someone spin the motor and watch for the shaft to spin and watch the plungers.