Tractor does not overheat but coolant comes out vent hose at radiator cap when engine is turned off. Installed a new rad. cap and checked thermostat for proper operation. Upper and lower radiator hoses are cold, engine only slightly warm when turned off. Could I be having a water pump problem?
- Thread starter Bigfisf
- Start date
josephmiller
Member
I have had problems with the ones i've worked on right after I refill or change coolant, but all it is is the expanding of the water
molecules. what I do is run them hard and let them steam that excess out. Then their is no problems. If you try it let me know how it does
at [email protected].
molecules. what I do is run them hard and let them steam that excess out. Then their is no problems. If you try it let me know how it does
at [email protected].
Janicholson
Well-known Member
You need to use a combustion gas detector strip in the coolant to assess whether or not there is a gasket leak into the coolant, or
pinhole cavitation leaks. If it is clean, How full are you filling the radiator. They should be only an inch to an inch and a
half above the core. There is no expansion tank, the top tank is the room for expansion. Jim
pinhole cavitation leaks. If it is clean, How full are you filling the radiator. They should be only an inch to an inch and a
half above the core. There is no expansion tank, the top tank is the room for expansion. Jim
josephmiller
Member
That would mean that the coolant would disappear, which would cause the tractor to overheat. Not? Also maybe it would show water in the oil in the form of beadlets.
used red MN
Well-known Member
- Location
- Coon Rapids, MN
After it has boiled like that let it cool down then check the coolant. If it is still above the radiator
tube plate it is fine, don't add more I think you just may be over filling it. Liquid when heated
expands.
tube plate it is fine, don't add more I think you just may be over filling it. Liquid when heated
expands.
Gene Davis (Ga.)
Well-known Member
Maybe it is time for a coolant overflow catch tank like automobiles use, or not fill the radiator quite so full.
gtractorfan
Well-known Member
That brings back memories of long ago, the old Farmall H did that after it was worked hard and shut off. And until the gas cap was replaced with a "special tall" one, when working in hot weather gas would shoot up thru the gas cap hole like a little geyser.
guido
Well-known Member
Hello Bigfifs,
The engine is running close to boiling temp. Without the engine running it gets hot enough to boil over
with out circulation of the coolant. Thermostat, radiator cap, cooling system needs a good look and see. It
should not boil after the engne is turned off,
Guido.
The engine is running close to boiling temp. Without the engine running it gets hot enough to boil over
with out circulation of the coolant. Thermostat, radiator cap, cooling system needs a good look and see. It
should not boil after the engne is turned off,
Guido.
notjustair
Well-known Member
I've had tractors with a blown head gasket do this. It seems counterintuitive. They wouldn't do it when theynwere started, just put under load and shut off. I think it is the pressure from the pistons on the firing cylinders leaking down - through the blown gasket rather than the crankcase like usual.
buickanddeere
Well-known Member
Steam formation
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