Thermostat leaking I think.

azazel19 · Post by **azazel19** » Tue Mar 11, 2008 3:25 am

Noticed that my woo is leaking fluid since its been sitting waiting on some parts. Looked today and it's coming from the thermostat housing. I's coming from the bottom can't tell if the seal is bad or if the housing is going bad. Before I pull it how does this thing seal do you have to use silicone or is there a gasket for it didn't see a seal on the gm-car-parts site. Also I have the metal housing which is supposed to be good I gathered. Thanks.

Spider · Post by **Spider** » Tue Mar 11, 2008 5:03 am

azazel19 wrote:Noticed that my woo is leaking fluid since its been sitting waiting on some parts. Looked today and it's coming from the thermostat housing. I's coming from the bottom can't tell if the seal is bad or if the housing is going bad. Before I pull it how does this thing seal do you have to use silicone or is there a gasket for it didn't see a seal on the gm-car-parts site. Also I have the metal housing which is supposed to be good I gathered. Thanks.

Silicone won't work,

Its probably the big '0 ring' thats leaking thats what seals the thermostat housing to the engine. If you have a metal housing and your engine is running in the correct temperature range. Than everything is probably ok. Except for the leak.
The thermostat is built into the plastic ones so the whole thing has to be replaced if it goes bad.
I don't know if this is true with the metal ones.

I would remove it and look it over, especially the o-ring, if it looks ok clean it up and smear some 'white-grease' on both sides of the ring and reinstall the unit.
Replace the 0-ring if its squashed or torn. Hope you can find one if thats all it needs. Maybe dealer ?

Pir0 · Post by **Pir0** » Tue Mar 11, 2008 8:23 am

On my 2.0 engine it's got a cast housing, and the thermostats seperate.

Not sure if it's the same with daewoo engines as far as the metal housings go.

ALl i'm gonna say is be very careful with those bolts. Dunno how many times i've seen them snap. [Mine snapped]

daewoomofo · Post by **daewoomofo** » Tue Mar 11, 2008 9:16 am

i have to disagree with spider. i used rtv silicone on my metal thermostat housing on my 1.6 and it worked great. but there is a o ring like he said. they are cheap and easy to replace so it would be a good idea to do that.

Pir0 · Post by **Pir0** » Tue Mar 11, 2008 4:26 pm

Silicone

Can't beat it

Spider · Post by **Spider** » Wed Mar 12, 2008 8:05 am

Ok I should have elobrated,

If the housing is designed to have an O ring seal like the Daewoo lanos 1.6 is and the 0 ring is crushed or leaking the only real fix is a new one.
If the old O ring is not in bad shape white grease is a cheap fix.
New one is better and in my experience, a new one with white grease is the best.
I am not 'anti-silicone' it is great stuff but depending on the job, not always the right stuff .

daewoomofo · Post by **daewoomofo** » Wed Mar 12, 2008 9:09 am

Spider.....the anti-silicone!!!!!!!!!!

Pir0 · Post by **Pir0** » Wed Mar 12, 2008 9:15 am

Shun the anti silicon-er!

j/k man

Spider · Post by **Spider** » Thu Mar 13, 2008 11:24 pm

very funny guys,

As far as this thread is going? I think were just "talkin to our hands" anyway.
I imagine that azazel19 is no longer reading this thread anymore.
He has a much larger problem with leaking oil. Guess I will click on that thread and see if he got it resolved.

The original daewootech forum

Thermostat leaking I think.

Thermostat leaking I think.

Re: Thermostat leaking I think.

Silicone on O rings ? or used as an O ring replacement ?