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1997 Cutlass Supreme
1997 Olds Cutlass Supreme 3.1 V6 approx. 90,000 miles
In about 6 months three times the car overheated, the radiator overflow tank bubbled out, temp gage went up to red etc......I let it cool, topped off with antifreeze/water and for the most part it went back to normal. Previously I had replaced aging dexcool anti-freeze and because the stuff had "jelled" some (no overheating problem at that time) I used a radiator cleaner etc. (I eventually cleaned and replaced fluid twice). During the 6 months I replaced the thermostat and had a water pump go out. In those months we did several long trips of a couple thousand miles and used it as our daily driver.....Then for the last overheating adventure I had some steam out of the exhaust and water in the oil. Now I've torn it down and more or less as expected found a bad lower manifold gasket (leaking water into the manifold)......I pulled the heads and the gaskets were fine.... presently a machine shop is testing them......While the manifold gasket addresses the current "chocolate milk oil" I don't see how it addresses the earlier apparent "exhaust gas leaks" into the cooling system. If the heads check out any best guesses? When reasembling any hints or tips? Thanks Rod |
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#2
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1997 Cutlass Supreme
I don't see where and how you determined the exhaust gas leaks in the post.
"Rod & Betty Jo" > wrote in message ... > 1997 Olds Cutlass Supreme 3.1 V6 approx. 90,000 miles > In about 6 months three times the car overheated, the radiator overflow > tank bubbled out, temp gage went up to red etc......I let it cool, topped > off with antifreeze/water and for the most part it went back to normal. > Previously I had replaced aging dexcool anti-freeze and because the stuff > had "jelled" some (no overheating problem at that time) I used a radiator > cleaner etc. (I eventually cleaned and replaced fluid twice). During the > 6 months I replaced the thermostat and had a water pump go out. In those > months we did several long trips of a couple thousand miles and used it as > our daily driver.....Then for the last overheating adventure I had some > steam out of the exhaust and water in the oil. Now I've torn it down and > more or less as expected found a bad lower manifold gasket (leaking water > into the manifold)......I pulled the heads and the gaskets were fine.... > presently a machine shop is testing them......While the manifold gasket > addresses the current "chocolate milk oil" I don't see how it addresses > the earlier apparent "exhaust gas leaks" into the cooling system. > > If the heads check out any best guesses? > > When reasembling any hints or tips? > > > Thanks Rod > > ----== Posted via Newsfeeds.Com - Unlimited-Unrestricted-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
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