Fuel return on Ford 335

Just purchased a Ford 335 that is in descent shape.
Changed fuel filter and valve on bottom of tank.
Bled filter, pump and injectors.
Engine cranks and runs fine.
It has no return to tank.
Tractor has thermostat.
It has a return line from injector leak off bolt back to pump.
Line on other end of injectors goes to a three way fitting.
One line goes to manifold and the other back to tank. Leak off lines bleed fuel when cracked not a lot.
Tractor has cav pump.
Should it return to tank and pump?
Is pump starting to get weak?
It cranks fine and runs fine.
Thank you!
 
Remove the banjo bolt at the injection pump cover, and make sure the small bleed orifice hole is open, it might be plugged. The injector top leak off fuel is VERY small, and if the pump cover bolt is plugged you won't see much return fuel.
 
(quoted from post at 05:58:47 12/01/19) Remove the banjo bolt at the injection pump cover, and make sure the small bleed orifice hole is open, it might be plugged. The injector top leak off fuel is VERY small, and if the pump cover bolt is plugged you won't see much return fuel.

Thank you very much!
My previous tractor was a 5000 with a inline pump and had a strong return stream to tank
 

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