WC Overheating Radiator Question

If it sat that long probably got mouse stuff in it, will maybe need to be completely cleaned.

With the hose connections off and the cap off flush it from the bottom connection with as much of a volume of water as you can get from a garden hose, look for junk coming out. It might take a trip to a radiator shop to run wires through the tubes to finish cleaning them. Soap with the flush won't hurt.

There might be discussion in the WC shop manual that I have on line in 8 or 10 pieces in my directory: http://geraldj.networkiowa.com/Trees

Running hot can also come from running lean on fuel and with late ignition timing.

Gerald J.

Did you test or replace the Radiator cap and Thermostat?  Sometimes a radiator hose may look healthy on the exterior but may have an internal flap which can impede the flow of the coolant.

Keep flushing radiator and block. Mud dauber nests will dissolve with water. Mouse nests with grass clippings, seed hulls, etc will take more effort to flush out. I'd keep flushing all Summer and run plain water until all the junk is out. Then in the Fall put in anti freeze. You can use some radiator flush from an auto parts store or use 1/2 cup of liquid laundry detergent and fill with plain water. Run it up to temperature and drain block and radiator. Repeat. Don't put cold water in hot engine to avoid cracking block or cylinder head. Allow engine to cool before flushing and refilling  with cold water. Also make sure fan belt is in good shape and at proper tension. Use a good radiator cap rated at 7 to 10 PSI. 

Be careful of  some radiator flush that's out there, the wrong flush can eat (or clean up) the O-rings on the sleeves, seal in the water pump then you are looking at more repairs.