No fuel coming out of injectors

[MonkeyFella95]

Hi, hope someone here can help point me in the right direction, this is driving me crazy.

I've recently replaced all injectors, fuel lines and put in a professionally rebuilt fuel distributor. I jumped the RPM relay to test it, put the injectors in jars and pushed down on the intake and... nothing. After about a minute of the fuel pump running one of the fuel lines for the accumulator ruptured... F***.

So after replacing the fuel lines there, and put in a new accumulator while I was at it, I'm back to trying to figure out why the injectors aren't spraying at all. I've ran the pump since then (making sure not to leave it running for long this time so I don't explode the new fuel lines) and the same thing. Clearly I'm not getting low pressure from the pump because it had enough pressure to rupture the fuel line, but I'm totally at a loss for how to figure out why not enough pressure is getting to the injectors. I can feel the resistance when pressing down on the air intake when the pump is running and I know fuel is getting to the distributor.

When I got the car the engine ran but had an over-fueling issue because of the distributor being stuck in the fully open position. Clearly I've messed something up here but I have no idea how to diagnose what the issue is. Any help would be appreciated!