TS2205 still over heating

[johneic]

Moon:
You may also want to test both your old and new thermostat in a pot, on the stove, with a thermometer in it, put a piece of wire in the part of the thermometer that opens and closes and suspend it in the water, watch for what temperature it falls off at.

Why test old one? if it falls off at a high temperature and new one drops off at correct temperature, you have found your problem!

John

 

[johneic]

I mean "put a piece of wire in the part of the THERMOSTAT that opens and closes..."

 

[terraformer]

I had a similar model and the flange that held the radiator cap was broken. It could never develop the pressure in the cooling system.

 

[Rod in Forfar]

My light is coming on. It only comes on when the tractor is pulling hard. No fluid coming out of overflow tube. I always stop before it get to hot. Don't want to blow head gasket.

Don

I went around and around on this with my Bolens G174 last year. Turns out those heat sensors fail frequently. A supplier in California sent me one for a Yanmar, but it was the wrong thread. Eventually I disconnected the light and relied upon a laser thermometer.

The interesting thing with the thermometer was that there was quite a hot spot on the head right near the sensor. I loosened it to let some bubbles out and retightened. It has run well since. I wondered if some sort of air lock had occurred when I changed the coolant.

I'd suggest buying a cheap laser thermometer and monitoring engine temperatures as the first step.