[s-cars] Coolant Leak at Exhaust Manifold

[mpollan1 at aim.com]

Did no consider that Cody.  Why?  It was a very distinct "bubbling" and after I wiped it with my finger the bubbling persisted until the manifold heated up.  Also, it was in one spot and one spot only.  Upon closer inspection I could see that area of the manifold was discolored relative to any other visible area of the manifold.
 
Mark
 
 
-----Original Message-----
From: Cody Forbes <cody at 5000tq.com>
To: mpollan1 <mpollan1 at aim.com>
Cc: s-car-list <s-car-list at audifans.com>
Sent: Wed, Apr 1, 2015 2:03 pm
Subject: Re: [s-cars] Coolant Leak at Exhaust Manifold


How sure are you that it wasn't simply condensation?

-Cody Forbes
(mobile)

> On Apr 1, 2015, at 10:56 AM, mpollan1 at aim.com wrote:
> 
> 
>
Greetings to all and no this is no April Fool's post although I wish it
was...
> 
> Patient is a 95.5 S6 that is no longer mine but a buddy's.  He has
been complaining of coolant loss following a TB and WP job.  I popped over but
could see no sign of a leak anywhere but the coolant was way low and there was
coolant still present on his garage floor.  Yesterday I went over again for a
visit and being a nice day I asked him to fire the old girl up and pull her out
into the sun.  I started looking on the turbo side of the motor and quickly saw
a pin hole like bubbling from the exhaust manifold, cylinder 2 (cylinder 1 being
the front most) at the gasket.  Really hard to detect but I got some on my
finger and sure enough it smelled like coolant.  Within 30 seconds or so the
leak "disappeared", or so I thought.  Upon reflection, the manifold was already
so hot that the coolant vaporized without any visible bubbling.
> 
> I pulled
the dipstick and the oil did not seem off color, i.e. milky.  I'm perplexed and
really do not know how to advise him.  Head gasket?  Cracked head? 
Compression/leak down test needed to determine the problem?  Any and all advice
appreciated.
> 
> Best regards and be careful out there,
> 
> Mark
>
_______________________________________________
> S-CAR-List mailing list
>
http://audifans.com/mailman/listinfo/s-car-list
>
http://www.audifans.com/kb/List_information