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Glenn Thoreson · 01-24-2018, 12:56 PM

I've found those MotoMeters are not at all accurate. It is true that over filling will cause coolant to come out. I always fill to cover the tubes and let the thing seek it's own level.
Are you running a thermostat? If so, it could be faulty. If not, a thermostat will close down the size of the hose and help control the flow of coolant. !60 degree 'stat for your location.
There is the possibility that rust chunks have washed into the radiator and blocked some of the tubes. Always a problem with all flathead Fords. Try back flushing the radiator. Never run plain water in these things.

01-24-2018, 12:56 PM	#23
Glenn Thoreson Senior Member Join Date: May 2010 Posts: 203	Re: Help with radiator cap spray I've found those MotoMeters are not at all accurate. It is true that over filling will cause coolant to come out. I always fill to cover the tubes and let the thing seek it's own level. Are you running a thermostat? If so, it could be faulty. If not, a thermostat will close down the size of the hose and help control the flow of coolant. !60 degree 'stat for your location. There is the possibility that rust chunks have washed into the radiator and blocked some of the tubes. Always a problem with all flathead Fords. Try back flushing the radiator. Never run plain water in these things.