[Vwdiesel] head gasket needed?

[The President]

It may be that there is no gasket leak. Check for coolant pressurization 
from cranking. Cap could be faulty.
Piece of crud under valve in cap?
Could be a cap for a gasser? Aren't they different operating pressures?  
Along with the diesel 'high temp' thermostat.
What's changed since new cap?
Coolant mixture weak?
Mark

>From: Roger Brown <r.c.brown at ieee.org>
>To: vwdiesel at vwfans.com
>Subject: Re: [Vwdiesel] head gasket needed?
>Date: Thu, 23 Feb 2006 11:49:50 -0800
>
>Marvin Jansen wrote:
> > My 85 1.6na is blowing antifreeze from the rad cap and seems to get
> > hot, over the 3/4 on the temp guage on a cold day after driving 30
> > minutes or more..  Maybe it's just the cap I got from O Reileys
> > leaking .  It's a German cap, but maybe a VW cap is a different
> > pressure or something. How can I check?  There is no apparent oil in
> > the water and no water in the oil.  The temp light is still coming on
> > sometimes, but after shutting off the engine while still rolling and
> > starting back up the light stayed off the last 20 minutes of the trip.
>
>Sounds like an exhaust to cooling system leak.  My '81 had that problem.  A 
>cooling system pressure test can rule out leaks and a bad cap and also tell 
>you if the cooling system is being pressurized by the engine compression.
>
>--
>     Roger
>
>
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