I've had a closer look at the thermostat housing and using a sheet of kitchen paper to dab around to see which part is wet, it appears that the leak is at the base of the removable thermostat compartment, which I can also see that there are signs of gasket sealant around the joint area with the main thermostat housing unit.
Another job for me to do after xmas.
I'm hoping that this can fixed by dismantling and cleaning the thermostat housing joint surfaces and fitting a new thermostat seal / gasket?
I guess that there shouldn't be any need for gasket sealant compound when fitting a new seal?
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Coolant Going Down - Leak In Thermostat Area
Started by Colin T, Dec 24 2010 04:32 PM
4 replies to this topic
#2
artscot79
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Ford Enthusiast
- Name: arthur
- Gender: Male
- Ford Model: focus mk2 ti-vct
- Year: 2006
- Location: Fife
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Posted 24 December 2010 - 06:41 PM
I've had a closer look at the thermostat housing and using a sheet of kitchen paper to dab around to see which part is wet, it appears that the leak is at the base of the removable thermostat compartment, which I can also see that there are signs of gasket sealant around the joint area with the main thermostat housing unit.
Another job for me to do after xmas.
I'm hoping that this can fixed by dismantling and cleaning the thermostat housing joint surfaces and fitting a new thermostat seal / gasket?
I guess that there shouldn't be any need for gasket sealant compound when fitting a new seal?
the housing has become brittle and will need replaced its a known issue
#3
alz
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Feet Under The Table
- Name: Alan
- Gender: Male
- Ford Model: Ford Focus LX 1.8 TDCI
- Year: 2005
- Location: Worcestershire
- Location:Birmingham west midlands
Posted 24 December 2010 - 08:07 PM
you should be ok with a new thermostat and rubber seal, it sounds the thermostat as been changed in the past, using the old seal which is a No! No! allways use a new seal, the seal will come with a new thermostat. (dont get antifreeze) when changing it..
#4
Colin T
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Posted 30 December 2010 - 07:41 AM
With the engine cold, I undid the 3 screws from the thermostat cover and removed the old thermostat seal.
During which I found chunks of 'translucent squidgy sealant' on the joint faces of the thermostat chamber & thermostat cover!!
Quite a mess
Looked like the previous owner had used bathroom sealant!!
Cleaned the sealant from the thermostat cover and fitted new thermostat seal, fitted cover and topped up coolant.
Started engine and ran for about 15 minutes with the coolant reservoir top off, topping up with coolant as the air came out of the system and the coolant level settled to correct level.
Will now run the car for a few days to see if this has fixed the coolant leak.
During which I found chunks of 'translucent squidgy sealant' on the joint faces of the thermostat chamber & thermostat cover!!
Quite a mess
Looked like the previous owner had used bathroom sealant!!
Cleaned the sealant from the thermostat cover and fitted new thermostat seal, fitted cover and topped up coolant.
Started engine and ran for about 15 minutes with the coolant reservoir top off, topping up with coolant as the air came out of the system and the coolant level settled to correct level.
Will now run the car for a few days to see if this has fixed the coolant leak.
#5
Colin T
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Posted 05 January 2011 - 03:03 PM
No more leaks - new thermostat seal has fixed this leak.
Seal cost about £1.80 from local Ford garage
Seal cost about £1.80 from local Ford garage
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