Radiator and Engine of my morris minor 1000 car be very heat,is it normal ? (hint - Have A open hole middle of the Radiator cup,heating water came out from off low hose-not a off low tank ) I have not use coolant ,only water - I normally clean the radiator and hoses using water hose - I afraid to use the coolant because if coolant leak to engine ,it will be a problem - what shall I do ? My ignition coil has set on the Dynamo ( morris 1000 car has a Dynamo)it close by engine so I think ignition coil Heat form engine heating also ???