Compression in cooling

Bernie Benz b.m.benz at
Thu Jul 11 11:04:25 EDT 2002

The most likely assumption would be the head gasket.  What is the
overheating, running without or low coolent recent history?


> From: Djdawson2 at
> Date: Thu, 11 Jul 2002 12:32:10 EDT
> To: 200q20v at
> Subject: Compression in cooling
> --
> [ Picked text/plain from multipart/alternative ]
> Anyone ever run into or had any BTDT with compression in the cooling system.
> I just took my first long trip in the 20v, and had a less than good time
> during the last 10% of the trip.  Somehow exessive pressure is building in
> the cooling system which first blew the cap off the overflow tank, then blew
> the radiator end cap, finally blew the end off of the electric coolant pump.
> The source of the pressure appears to be compression.
> Has anyone out there experianced this?  Is it generally a blown head gasket,
> or is head cracking common?
> As always, any help greatly appreciated.
> Thanks,
> Dave
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