can someone tell me if there is a bleed screw on the fuel pump? if so which one is it?

there is on the side of the pump facing the radiator (8mm spanner) and one on the back below the injector pipes (about 10 or 11mm spanner). thinking it will be one of these two but dont wanna go undoing random bolts on the fuel pump!!

its an r reg van non turbo if that helps

cheers