Sudden no start, no fuel pressure

Hi everyone, my truck won't start. It ran fine just prior to no start. It's a 1983 Mazda B2200 diesel.

Checked glow plugs; they have continuity and .2 ohms each.
Moved on to check fuel. I unscrewed the line from a few injectors, cranked the engine, and no fuel came out at all,. Pressure guage shows nothing. I could see a little pool of fuel on top of the injector where I unscrewed the line.

Could it be the fuel cut valve/ fuel cut solenoid?
I can't get a wrench in there to unscrew the damn thing, brilliant engineers.

What else could it be other than a stuck fuel cut solenoid? Please help me, I'm at my wits end

I don't know the Mazda diesel engine at all, but I know it has to have an injector pump of some kind.....right? I don't know if it is mechanical, or electrical, but if your not getting fuel to the injectors, then the pump for them would be the next place to check......