Hello.
Should I be able to blow air from 1 to 2 on the secondary fuel rail. It seems blocked or does it need to be above 38psi to flow.
from 1 to the injector ports is clear. Its blocked where my finger is.
Can the regulator block fuel flow? or is it just to stop too much pressure?

I'm chasing a no start, I have fuel from the tank, all be it low pressure but nothing on the return.

It started ok a few months back, but now it wont.

thanks