In pic #1, the red writing, that hiss is the air governor. Nothing wrong with the hiss after shutting down, as long as the air stops leaking out after a second or 2.
Yes, that is the injector pump you're pointing at.
There's a few lines between the block and the injector pump, and the rest is around the fuel filter. Bolted to the injector pump is the lift pump(fuel transfer pump) which is under your arrow and has a banjo bolt at either end. At the top of the fuel filter housing is the air bleeder, make sure it's not loose unless you're pumping the hand primer. Just a hunch, start at the filter, and work your way back to the tank
, or from the tank
forward. Another thought was the pickup tube in the tank
. Those can get rusty and/or break off.
You could also apply 3-5psi to the tank
at the filler to speed up the whole process. Fuel will usually seep out of where the air usually leaks in. It wont gush out, so you'll have to hold the air on it for a couple min.
It does mean Diesel Turbo and 466 cubic inches, not Dee Troit.
Not to add confusion, but Detroit Diesel did actually buy this series of engines from IH, and called them a Series 40, later a 40E. The Series 40 and 40E usually had the good hp ratings too.
my daily driver:67 F100, 300 4V, cammed, 4 spd.
or, 08 VW R32.
work rigs: 94 IH 4900, DT466(originally 230hp), #0 fuel plate, tighter gov springs, 22* timing
or, 06 IH 7400, DT466E, 300hp
My Low Buck fuel rate site: