Ken, with the radiator cap off and filled, squeeze the top hose and see if air bubbles out. Fit the cap. Release the squeeze. That should remove a small amount of air in that area.
It's a shame there isn't a bleed valve in the top hose to allow air out. Years ago my Renault 18 had one and it made air purging much easier.
Good advice and it was ok rad is full and heater vented. Thanks for all advice here. As usual the best reference book for Mogs. Thanks folks.
