Wont start

Check the air cleaner?

Check the air cleaner?

I was running my motor grader 8T D318 got out on the road a ran out of fuel 🥺 .: I got everything fueled and ready to go... I was flustered and could not get it started. Pony turning the main engine as fast as the cars flying by. Fuel on, gas low, 😱 I had forgot the compression.
I had to stop and slow myself down and start my process again.  
Are you running 12 or 6 volt battery? A 12v battery will NOT hurt the 6v starter.
My 1954 8T D318 don't show fuel pressure until the main engine starts and then the gauge pegs out.
How are you bleeding the fuel filter housing? Are you bleeding the lower housing first? Bleed it until all air and bubbles stop. The valve on the top housing bleed till  you get a full stream of fuel from the tube routed under the engine. Then you can bleed the air out of the injectors and/or nozzles.
Good luck

Who knows about the modern fuel, it could be bad. I would agree the old formula fuel was good for 20 to 30 years maybe a lot more.

I had a situation like yours. Opening the real injector bleeder valve on the back side did the trick. No idea why cracking the line was not enough. I spent 1/2 a day fussing around with a simple fuel filter change.

What do you mean the "back side"?

then pressure seems very low--there are injector bleeder valves behind the injectors toward the block

Pull the inspection plate off the side of the injection pump and check that the fuel rack is not stuck in the no fuel position or that the plungers are not stuck in the up position.