In a message dated 11/17/2003 10:23:55 AM Eastern Standard Time,
zmaninco@yahoo.com writes:
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.
        If it were the top O-ring on the cylinder then why would the cooling
system hold 30# of pressure for 30 minutes with no signs of leaking into the
heads.  AND, why would there be no signs of air leaking into the cooling system
when each cylinder was pressurised with 120# of air pressure?  I'm not
convinced it's the water pump either BUT I'm looking for an answer and the water
pump scenario as explained to me by others seems to be the most believable under
the circumstances.

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