That sounds a little strange Frank.  What you are
proposing is that the waterpump is enabling air to be
sucked in.  And this is happening to a presuurized
system, where any leak wuold allow water to escape
out.

I'll be surprised if this solves the problem.  I would
lean more towards the upper o-ring on the cylinder
failing, enabling compression to get into the cooling
system.

Please provide the answer when you have it.

Z

--- Frank Condelli <RAlanen@AOL.COM> wrote:
> In a message dated 11/17/2003 12:08:35 AM Eastern
> Standard Time,
> LISTSERV@GERRY.VANAGON.COM writes:
> Da bomb is traveling and her van is puking water out
> of the overflow.
> Mechanic found radiator cap bad and replaced and
> it's still doing it.
>
> Any ideas beyond head gasket leak into the water
> system?
>         Well, funny you should bring this up as I
> have a customers van here
> now doing exactly the same thing.  I have pressure
> tested the cooling system to
> 30# and the engine to 120# and not a leak anywhere.
> BUT, when the engine is
> running at anything over idle it is sucking air into
> the cooling system and
> eventually the main tank purges itself into the
> overflow tank.  I have spoken
> with a few of my "Associates" and have been told
> this is a classic water pump
> seal faliure.  The water pump seal is allowing air
> in but not allowing coolant
> out.  Change the water pump.  That's what I will be
> doing to this 1.9 engined
> van this week.  Hopefully it will solve the problem
> and not just elevate the
> customers bill.
>
>
> Cheers
>
> Frank Condelli
> Almonte, Ontario, Canada
> BusFusion a VW Camper camping event, Almonte, ON,
> June 10 ~ 13, 2004
> '87 Westy & Lionel Trains
> Member: Vanagon List, LiMBO, IWCCC & CCVWC
> Vanagon/Vanagon Westfalia Service in the Ottawa
> Valley
> STEBRO/Vanagon Stainless Steel Mufflers
> Frank Condelli & Associates or
http://frankcondelli.com

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