I have read and read all over google about this but cannot find a solution, perhaps you guys can help me out.
My tractor is a 3 cylinder gas engine Ford 4000 w/ the SOS tranny.
My issue is that the tractor will idle at the right temp but will slowly heat up when driving, with and without a load (no implements and no PTO).
Something else to not is that the coolant has bubbles or foam when I shut down the tractor.
Things I have tried for troubleshooting:
1)Checked thermostat by boiling in a pot and shooting with a temp gun...it is good.
2)Had radiator professionally rodded out and checked for leaks... it is good.
3)Checked radiator hoses for collapse when engine is hot... they are good.
4)Timing is good.
5)Ran a combustion gas check in the coolant to see if head gasket or cracked head/block might be the culprit. The blue liquid is supposed to turn yellow if combustion gas is present, it did not turn yellow. ( I thought this might explain the bubbles/foam).
6)All fluid levels are good. Oil and Trans fluid and hydrolic fluid.
7)Water seems to be circulating well. I peaked in the radiator while running and water was moving around pretty well. No water out of weap hole.
Another thing to note is that today I could not get it to overheat, I'm guessing because the outside temp was in the 60s. My overheating issues have been during temps above roughly 75-80 degrees. Also, the temp gauge did go into the red 1 time as far as I know and that was for probably a minute or 2.
Any help would be appreciated, I'm at a loss here. Thanks in advance.
My tractor is a 3 cylinder gas engine Ford 4000 w/ the SOS tranny.
My issue is that the tractor will idle at the right temp but will slowly heat up when driving, with and without a load (no implements and no PTO).
Something else to not is that the coolant has bubbles or foam when I shut down the tractor.
Things I have tried for troubleshooting:
1)Checked thermostat by boiling in a pot and shooting with a temp gun...it is good.
2)Had radiator professionally rodded out and checked for leaks... it is good.
3)Checked radiator hoses for collapse when engine is hot... they are good.
4)Timing is good.
5)Ran a combustion gas check in the coolant to see if head gasket or cracked head/block might be the culprit. The blue liquid is supposed to turn yellow if combustion gas is present, it did not turn yellow. ( I thought this might explain the bubbles/foam).
6)All fluid levels are good. Oil and Trans fluid and hydrolic fluid.
7)Water seems to be circulating well. I peaked in the radiator while running and water was moving around pretty well. No water out of weap hole.
Another thing to note is that today I could not get it to overheat, I'm guessing because the outside temp was in the 60s. My overheating issues have been during temps above roughly 75-80 degrees. Also, the temp gauge did go into the red 1 time as far as I know and that was for probably a minute or 2.
Any help would be appreciated, I'm at a loss here. Thanks in advance.