ZD30 engine can I crack injector nut ?

[Dagwill]

Engine died and wont restart. Removed intercooler. I can now see the nut that connects injector pipe to injector.
Question. can i njust undo the nut so i can tell if fuel is being pumped, or do I need to dismantel things further so i can also put a spanner onto whatever that nut is screwing onto.
Im worried if i just put a spanner on the nut and try to loosen it, I will twist/damage whatever is inside the rocker cover
Thanks

[0-TJ-0]

Nah. Just crack it mate. Shouldn't be an issue. As long as you're talking about the nut holding the line to the injector.

[Dagwill]

Dickhead, used my brains and cracked the nut other end of the line, on the pump. Undid it 3 or 4 flats, reached inside with the door open so i could watch and hit the starter,,,,,,,, not even a drop,,,,,Hmmm.

[Dagwill]

That was me i was calling a dickhead.

[0-TJ-0]

Maybe NATS related then?