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Re: Penosin Fountain

Hi Ron;

    Ah yes, I believe this is called the volcano syndrome. Previous posts
have attributed it to a faulty hydraulic pump. There should be no pressure
in the reservoir - a faulty cap is unfortunately not the problem. More fluid
is being returned to the reservoir than is being drawn out by the pump, so
you get an overflow. It is usually a closed system - the pump pulls from the
reservoir, pumps through the steering rack, and the fluid is returned to the
reservoir. A separate line charges the bomb and the fluid used in braking
assist is returned to the reservoir through the brake servo. The volume
required to get a volcano must be coming from the power steering circuit -
perhaps the pump suction flow is interrupted or reduced?  I haven't BTDT, so
I can't offer much more in the way of advice.


Fred Munro
'91 200q  264k km
-----Original Message-----
From: Ron Husak <rhusak@csi.com>
To: quattro@coimbra.ans.net <quattro@coimbra.ans.net>
Date: Monday, December 21, 1998 9:48 AM
Subject: Penosin Fountain

> I have had a very strange thing happen to my newly acquired 91 200 20
>valve. It suddenly sprayed all of it's fluid (Penosin) out of the top of
>reservoir cap ( sensor). Obviously, maybe not so obvious... I cannot drive
>the car this way. Could it just be a failed cap?
> I had no idea there was so much pressure under this cap!
> Any other ideas?
> Thanks in advance for your input...
> Ron Husak