Opening pressure of ALL injectors Ford Transit Mk3,4,5 is the same and equal to 275 ... 280 bar.
If the nozzle does not "shoot" when the starter motor scrolls, there are three possible reasons:
1- 12 volts is not supplied to the shut-off valve of the fuel pump;
2-faulty shut-off valve;
3-worn plunger steam injection pump.
To exclude the effect of a faulty shut-off valve, it can be unscrewed, pulled out of it a steel cylindrical core and a valve without a core set in place.
At the free end of the core should be a rubber tip.
If he is not, then he stayed in the well in the injection pump and he must be removed from there.
The wire to the valve can not be connected.
If after that the injectors will not "shoot", then the fuel pump is defective.
igotalake,it looks like you were deceived by the fuel pump dealer and pedals.
It happens.