Radiator top hose bleed screw

My 2004 td5 had lost the top part of the bleed screw so it's now leaking any ideas of a quick fix being Sunday and 150 miles from home

Self amalgamating tape over the whole hose/bleed screw arrangement or if you can get the old bleed screw out then its a standard metric thread. I think M5 or M6. Get a machine screw with the right thread and put an o ring under the head. Did the same on mine when I lost the screw in the engine bay.

Glued over it and then taped over it will get new pipe tomorrow