Morris Minor Owners Club

hi problem with radiator overheating have renewe thermostat and housing and radiator cap all to no avail recently had electronic ignition fitted coincidence? grateful for ideas

Could be running too retarded - but in this weather -I doubt that's the problem..... Assuming no leaks - could be loose fan belt/worn out water pump impeller/blocked up cores in the rad (are all the little fins present?) - but most likely is a leaking head gasket or a cracked head. By all means try flushing out and advancing the timing till it 'pinks' -then retard slightly.

how do you know it's overheating,blowing the water out,boiling, have you got a temp guage fitted ,long journey,ticking over etc a bit more info required.

no temp gauge after ticking over start forward water boiling flooding out overflow

You know not to fill the rad right to the top? But if it's as you say - likely is the head gasket - but do all the simple checks/tests first.

well if it does it straight off before fully heated then certain to be head gasket,but if it takes a while after running for a few miles then could be radiator blockage.