Many of the thermostat housings on those tractors are rusted so the coolant goes right on past the thermostat. Even when new there was not a positive seal as the tube slides up into the bored hole in housing. There is not enough material in there to install a seal on the gas engines but I have had it done on some diesel engines like 450 diesel. I have fashioned my own ideas on the old gas burners to ake the thermostat actually hole the coolant back. Also, like Jim says, bypass has a lot to do with them not warming up but all of mine do warm up even without the bypass restricted. Far as black smoke at idle, if the adjustments don't take care of it you most likely have wrong or damaged idle jet in carb. Had a guy bring a 300 carb into me last year that someone had been drilling things out and drilled the wrong jet for what he intended to happen.
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Today's Featured Article - The Fordson F Ignition System - by Anthony West. A fellow restorer contacted me earlier this year asking for some help and advice on a model F that he was restoring. He had over a period of months spent a fair amount of his hard earned cash on replacement parts for the old "trembler" ignition. Sadly though all his efforts seemed to be a waste of time and money as he still couldn''t get the temperamental old thing to run correctly!! If i said that this was a little frustrating for him that would be "conservative" in fact the problem had reduce
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1964 I-H 140 tractor with cultivators and sidedresser. Starts and runs good. Asking 2650. CALL RON AT 502-319-1952
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