Posted by rustred on October 14, 2018 at 09:46:48 from (74.214.153.210):
In Reply to: Farmall 400 question posted by Mark Hogan on October 14, 2018 at 02:44:22:
many dont understand that the rad cores get corrosion inside from weak coolant mixtures. this plugs the cores and reduces coolant flow through the rad. you can simply remove the cap and drain down the coolant till you see the cores. if you see white corrosion in them thats your problem . from my experiences 90 percent of the time its a radiator problem. after all these tractors are over 60 years old and that is quite normal to happen. dont see how a circulating block heater can make it heat. do you have a working factory temp guage on the tractor?? normal operating temp on the guage is when the needle sits right on the U in RUN in the green. thats working in the field. you have lots of "seems" going on but nothing confermed.when you say "heating" is the coolant boiling and pushing out? retarded timing will not cause an over heating situation if the rad is good.plus you did not say if your working this tractor or just driving it around or its just sitting overheating. plus you had the valve cover off and should have set the valves at that time... there is more to it than just say they are going up and down. they need to be set at .017 hot. and yes if there is oil on the top of head running down it will be smoking when working... but that dont mean the engine is over heating.
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