overheating

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overheating

john	I went out to turn some land and after about 20 mins. tractor started pushing water out of overflow tube. My way of thinking is put a new water pump on. There is no thermostat right? Radiator is fairly new and fan is turning. Am i thinking right? it started to run rough and backfire also. would run but only idleing not under a load. Pulled rotor cap and coil seemed to be a little moisture inside and seems like at very least gasket for water pump is leaking. I know on older cars water pump would leak to let u know it was going bad. Do 8ns do the samething?
Jim Loveridge	You say the radiator is new? Did you overfill it? Should be only be filled just to the top of the fins. This is to have room for expansion. The sputtering could be from water getting into the coil or distributor. WD40 is great to use to dispell water. Unless the water pump shaft is loose I wouldn't just jump to that conclusion.
Bob G	Like Jim says don't overfill the radiator. Make sure the fan belt is not too loose. 1/2" deflection. There is a thermostat in the upper radiator hose. it may not be opening correctly or at all. about the only thing that can go bad in the water pump is the bearings and then the shaft would wobble around and really leak. I don't think a bit of gaskeet leak would indicate any problem with the water pump. Keep us posted.

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