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Date:         Wed, 7 Feb 1996 00:08:53 -0500
Sender:       Vanagon Mailing List <vanagon@vanagon.com>
From:         DHaynes57@aol.com
Subject:      Re: head gaskets and time bombs

In a message dated 96-02-05 19:27:00 EST, SyncroHead@aol.com writes:

>The haed gaskets that leak coolant on a Vanagon are entirely different than >the head gaskets on most other "normal" cars. A "normal" head gasket (like >on a Jetta or Eurovan) does dual duty in sealing both the combustion chambers >and the coolant passages. The Vanagon head gaskets that leak only do the job >of keeping the coolant inside the engine. Compression sealing is seperate on >a Vanagon and not generally suspetible to leaks like the coolant gasket.

Internal head gasket leaks are more of a problem than you may think. This is the failure that causes unexplained air in the system overheating, pooheat, and will cause engines to blow. Also, exhaaust gasses getting into cooling syem cause more corrosion and the increased pressure will damage the radiator and heater cores. All Vanagon engines should be regularly "Leakdown" tested to detect this conditon. Especially before buying. Ifbubbles are observed in the main expansion tank when the engine is revved, you probably have this problem. If this is not a problem and the outside leakage isnot catastrophic, I would try cooling system stop leak. I have been very succesful with this fix. Sometimes, removing the heads will cause other problems that will cost al types of money to correct. On a high mileage engine, it may be time to use the stop leak, and save your money for a rebuild. Dennis.


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