gas tank replacement

[Matt Suffern]

Huw, the problem with simply obtaining a used fuel tank is that the condition of the lining on the inside varies considerably, and 
may be worse than the one that's being pulled, especially if the "new" tank sat around for a while, dry, and had a chance to rust up 
inside.  It's a solution, yes, but not a permanent once, which I think is what everyone that the problem has affected is after.

The in-tank "sock" is definitely there.  You can actually see it without cutting into the tank at all.  After having pulled the tank, shine a 
light into it and find the oval-shaped opening in the baffle at the bottom.  Just below that opening on the other side of the baffle is 
is the "sock."

Also, I think this problem is more common than we think.  Since purchasing my car a year ago and having problems and posting 
about them, at least 3 or 4 other type 85 owners have mentioned having the same issues.  Maybe the lining inside the tank 
deteriorates rapidly after ~18 years, who knows.

Cheers,

Matt
'86 4kq
Chapel Hill, NC


> 
> Message: 6
> Date: Mon, 24 Jan 2005 07:16:13 -0600
> From: Shawn Manny <shawn.manny at gmail.com>
> Subject: Re: gas tank replacement
> To: audi at humanspeakers.com
> Cc: quattro at audifans.com
> Message-ID: <fc6e70eb050124051633847696 at mail.gmail.com>
> Content-Type: text/plain; charset=US-ASCII
> 
> HUW, after fixing my tank I can say fotr sure there is a metal
> prefilter sock on the pick up line in the tank. Since talking to Tony
> and fixing mine I have talked to many other 4Kq owners in the same
> boat, not all on here either btw..
> 
> Shawn
> 
> 
> On Sun, 23 Jan 2005 20:58:52 -0500, Huw Powell <audi at humanspeakers.com> wrote:
> > > I'm currently battling fuel tank problems with my '87 4kq.  The problem, I
> > > think, is a plugged in tank sock filter. I basically have 2 options, cut it
> > > open and pull the sock off or I'm considering the possibility of a fuel
> > > cell.  Have you considered/investigated the latter?
> >
> > Why not just obtain and install a used tank?  Not too tough of a job,
> > and this problem seems quite rare (so the used one should be good - also
> > you can clean it carefully before installation).
> >
> > Also, I never heard of this in-tank filter?  Type 85's usually have a
> > pre-filter in the line from the tank, and of course the big filter after
> > (?) the fuel pump.
> >
> > --
> > Huw Powell
> >
> > http://www.humanspeakers.com/audi
> >
> > http://www.humanthoughts.org/
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> >