Bro, the blue lettering is painful to read. I assume from your pic you have an a2 series M923. If so, here is your procedure:
Be sure you have the square washer on the top bolt of the filter canister seated correctly. Rubber side down, and square aligned with square in filter housing. Bolt is tight, drain valve at bottom is closed.
Remove and drain or replace smaller engine mounted fuel filter as well. Install filled with fresh clean diesel fuel. Be sure this is a clean fill, as it is now after the filter. This is not even allowed to happen on today’s EFI common rail diesel engines.
Locate 10mm headed bleed bolt on inner side of injection pump at front, between pump and engine.
Crack this bleed bolt open, depress fuel primer button on the mechanical lift pump. Close bleed bolt before releasing primer bulb. Repeat until a solid pulse of fuel emits from bleed bolt. May take 20-30 times, but it goes quick.
Once done, you should now be able to depress the primer button with the bleed bolt closed and hear a “squeak” from the return line fitting at the rear of the injection pump. This is confirmation that all is primed as best can be.
After this, the truck should start right up. Injector lines don’t need to be bled on an 8.3L.
Next time you can check for water by depressing the Scrhrader (tire) valve atop the filter housing whilst the drain valve is open. This will allow it to drain.
Replace at least the soft rubber fuel suction hoses from tank to lift pump if they have not been already. Theses are nearly a 100% leak path by now at the age of these trucks.
Good luck.
