[V6-12v] A brainstorm (?)

[Lino M. Valadas]

If you are going to tighten the bolts, which I think you should,  you must
loosen them first as though you were going to remove the head, that is,
follow the proper sequence as per Bentley and then torque them to spec again
as per Bentley.

Lino


----- Original Message -----
From: "apowell at colocougs.org" <apowell at gocougs.wsu.edu>
To: "12V List" <v6-12v at audifans.com>
Sent: Saturday, September 11, 2004 1:28 PM
Subject: [V6-12v] A brainstorm (?)


> So I'm sitting here lamenting the continuing oil leak in my 1993 90Q's
motor. I've replaced all the
> normally leaky gaskets except camshaft end seals, head gaskets and rear
main.
>
> And after I did the work (including valley pan gasket) it leaks oil faster
than before!!
>
> WHY, I have asked myself repeatedly, is it leaking more oil now than it
did before I replaced this
> stuff?? (The timing belt, serpentine belt, water pump and idlers, valve
cover gaskets, and valley
> pan and intake manifold gaskets.)
>
> BUT - a thought just found itself in unfamiliar territory - my conscious
mind.
>
> I had to pull the intake manifold to replace the valley pan gasket. There
are two schools of
> thought - one school (and the factory manual CD) says you must all the
head bolts 1/4 turn after
> removing and re-installing the intake manifold. The other school says that
this procedure was only
> added to the manual in the last couple of years, and it's not necessary to
turn the bolts.
>
> Being a lazy-butt, I seized on school of thought number two and didn't
turn the bolts.
>
> But - MAYBE I do have the head gasket leak I don't want. And usually IF
it's a head gasket, it's the
> driver's side head gasket, which is where the leak seems to be worst. And
MAYBE when I didn't turn
> the bolts 1/4 turn, failing to do this allowed the leak to get worse by
letting the hole open up
> slightly. And logically, that's about the only thing I can think of that
might have made the leak
> worse.
>
> So MAYBE if I pop those valve covers off tomorrow and turn all the head
bolts 1/4 turn as per the
> factory recommendation, the leak will at least SLOW DOWN.  And if it does,
I will know where the
> leak is!!!!!  And I have nothing to lose, because this procedure is
approved by the factory.
>
> I don't want to pull that head, but if I have to, I will. But it's such a
pain that I need to
> really, really convince myself that it's the problem.
>
> Anyone see a problem with this logic??
>
> I'm thinking that Sunday afternoon would be a great time for this
bolt-turning procedure.
>
> ************************************
> Al Powell
> apowell at gocougs.wsu.edu
> 1958 Fiat 1200 Transformabile Spyder
> 1983 Datsun 280ZX Turbo
> 1993 Audi 90Q
> 1997 Chebby Blazer
> 1999 Chebby Blazer
> ************************************
>
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