There is a bleed screw at either end of the pump so crack them and use the primer until there is solid fuel flow
close of
now crack the nuts on the lines at the injectors
turn the engine over until you see solid fuel drops from the nuts and while still turning over , tighten the injector nuts back up
SAFETY NOTE ___do not use fingers in this area as the fuel pressure is at 22,000psi and fuel will pierce the skin and give you blood poisoning
just use the spanner