>In a message dated 4/10/02 11:06:24 AM, VW85Westy@AOL.COM writes:
>
><< Air enters cooling system
>during highway driving. >>
>
>This is impossible because while driving, the coolant is at a positive gage
>pressure, even with a leak.  Have the coolant checked for combustion
>byproducts.  If there is any present, then you have a combustion leak of some
>sort.  The real problem is getting someone to pay for it.  You certainly have
>already made your contribution in that department.  One thing which puzzles
>me: did not $600-worth of diagnostics reveal anything of substance?

It would seem not.

I mistrust the installer. If after 10 hours of diagnosis he can't
*confirm* the cause (I think a simple chemical analysis of the
coolant would determine whether or not the exhaust is leaking into
it), I'd not use him for diagnostics.

I suggest getting a qualified technician into the loop:
1. Have him do a diagnosis up front (talk it over with several and
choose one based on their experience and knowledge of the problem).
This shouldn't cost too much.

2. Take the results to your installer and/or rebuilder and insist
that he carry out the indicated repair. If he's not using quality
parts (VW or OEM), maybe that's the problem.

Weren't the heads checked for cracks when they were removed?

Good luck,
Dave
--
Dave Carpenter

Whatever you wish for me,
May you have twice as much.

"Sometimes I think we're alone in the universe, and sometimes I think
we're not. In either case the idea is quite staggering." -- Arthur C.
Clarke