How I "fixed" my coolant leak (V6 head gasket issue?) - Saab NG900 & OG9-3 Bulletin Board - Saabnet.com
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How I "fixed" my coolant leak (V6 head gasket issue?)
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Posted by Derek in Durham [Email] (more from Derek in Durham) on Wed, 1 Oct 2003 14:49:57 Share Post by Email
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For background, read the linked post below. I have not fixed my coolant leak at all, but I'm 99% sure that it is due to (1)leaking head gasket or (2)microscopic warp or crack in the head or block or (3)both.

Short history: 6000 miles after previous HG replacement, I was once again gobbling down coolant very fast when driving in the city with lots of short trips with several cool/warm/expand/contract cycles during the day. Road trips caused virtually no coolant loss. I was getting the tail pipe clouds after cold starts, etc.

I have "fixed" my problem by venting the coolant cap each night. About an hour or so after I get home each night, I open the expansion tank cap and let the air bubble out. This has slowed the coolant loss by at least a factor of 4, enough so that I don't worry so much about it.

If I let the car sit overnight, there is less gas to vent when I open the expansion tank. But I still get an audible "pop" and a rush of some gases out of the expansion tank. I don't think that there should be any gases coming out of the expansion tank after the car sits overnight--any thoughts?

Derek / 1994 900 S V6 135,900mi

posted by 152.3.1...

http://www.saabnet.com/tsn/bb/NG900/index.html?bID=90545

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