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Hi Rick I agree with Tom for possible radiator plugged or
new rebuilt stiff engine. If you want to know if radiator is plugged
just remove lower hose of the rad remove the upper hose from thermostat elbow
and block it with rag
(keep the antifreeze if there is)
the engine and rad will empty
put garden hose in the filling point of rad
depending of the pressure and flow of the hose
you will see if water flows easily by the botom
of rad if there is free flow the rasd is OK if not
you can bring it to rad repair shop. Another possibility put a light on fan side and see on the other side of rad you will see if the
cell are blocked by dirt. Next does the thermostat opens and is in on right side upside down thermostat will not open... to check that remove the elbow remove the thermostat replace elbow and run engine. The thermostat goes *spring side" down sensitive element in head. If you want check thermostat heat little amount of water with thermometer check temperature of water and put the thermostat in water usualy the temp
value is printed on thermostat you will see if it works properly. If good reinstall thermostat. If all of above are ok and engine still overheat.. run engine at 1/4 throttle check temp gauge carefully when begins to overheat
stop engine and restart it when cold do same procedure 8 to 10 times jus to permit rings to take their place. When engine hot check the temperature in radiator with thermometer you will be able to compare reading of temp gauge.
Check the tension of the fan belt if the belt is loose the belt will slip and the water pump will
run slow an wil cause engine overheat. Finally my experience with Fergies (40 years)
you can run with loose rad cap and the engine will not overheat it will just lost water in little quantity. If rad cap and thermostat are old it is preferable to replace by a new ones. TAKE CARE WITH HOT WATHER MAY CAUSE SEVERE INJURIES IF IN CONTACT WITH SKIN ooooh long run Good luck
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