Need Help!

[952DrTahoe]

I decided to change the Thermostat in my car and now I have a leak. I've taken it off about 3-4 times and its still happening right behind the housing area.

When removing the original thermostat I realized there was no gasket and only the black O ring around the manifold. I had already purchased a new gasket and figured that this was mandatory. The old thermostat was a 160 instead of 195 as requested OEM by factory. Also, the screws on the housing were two completely different sizes. NOW!! I put everything back exactly how it was (adding the new gasket) and I can't stop the leak from behind the housing area. Any ideas what could be causing this???

Thank you in advance.

 

[SunlitComet]

do you have the thermostat inside the open slot of the packing therefore rubber covering the top, bottom, and around circumference of it?

 

[retorq]

You need one or the other, gasketed thermostat or gasket on the housing, you can't use both. Our trucks are setup for a gasketed thermostat. Two different size (length) screws is normal, the thread pitch and size should be the same. If they are different there is a good chance there was a stripped bolt at one time and was heli-coiled or something at one point, pretty common, happened on my OE intake.

 

[952DrTahoe]

@sunlitcomet: yes

@retorq: the thread pitch and size are completely different. Im pretty sure the passenger side hole was stripped at one point and then heli-coiled.

Thanks for the replies. I'm currently trying to get it figured out. Hopefully I can have this issue taken care of asap.

 

[NathanJax]

@ Sunlit