4000 Q fuel problem - tank

[Matt Suffern]

No, not that I could tell.  First off you'd have to get to it, which entails actually cutting into the tank, and secondly it's solidly fixed onto the end of the tube.  Assuming 
you were very good with an angle grinder and welder and could weld up the tank again so it would hold gas, you could conceivably cut open the bottom of the 
tank and cut the screen off the end of the tube altogether.  This is what I tried to do, but I could never weld the tank back up again so that it was watertight.  The 
angle grinder disk I used was just too wide in the first place.

Best,

Matt

----- Original Message -----
From: "Shawn Manny" <shawn.manny at gmail.com>
To: "Matt Suffern" <msuffern at lycos.com>
Subject: Re: 4000 Q fuel problem - tank
Date: Fri, 10 Dec 2004 10:16:03 -0600

> 
> MATT, is the screen removeable easily? That was Audi's service bulletin fix...
> 
> 
> On Fri, 10 Dec 2004 11:11:25 -0500, Matt Suffern <msuffern at lycos.com> wrote:
> > Tony,
> >
> > I struggled with this problem for a long time.  It seems like the 
> > only feasable solution is to replace the tank and hope that the 
> > next one is rust-free...  Until of
> > course it rusts up again, and so on and so forth.  The major 
> > problem, as far as I can tell, is that Audi decided not only to 
> > use a really crappy coating on the inside
> > of the tank, they also placed a "screen" of sorts on the end of 
> > the supply line inside the tank.  This screen is easily clogged 
> > by the rust problem, and prevents any
> > sort of aftermarket tank sealer from working since the fine mesh 
> > is blocked instantly by a coating of tacky sealer.  A removable 
> > supply line would have easily
> > prevented this, but no...
> >
> > As you can see I'm a little bitter about the whole ordeal, all 
> > the more since my own fuel pump has been intermittenly noisy 
> > lately, only about six months after I
> > replaced the tank with another.
> >
> > Pics of my old tank, after I took an angle grinder to it, are here:
> >
> > http://www.unc.edu/~msuffern/audi/ft1.jpg
> > http://www.unc.edu/~msuffern/audi/ft2.jpg
> >
> > That's POR-15 fuel tank sealant, great stuff, but it completely 
> > clogged the screen.
> >
> > *sigh*
> >
> > Good luck!
> >
> > Matt
> > '86 4kq
> > Chapel Hill, NC
> >
> > > Message: 7
> > > Date: Thu, 9 Dec 2004 17:01:04 -0800 (PST)
> > > From: Tony Hoffman <tfh400036 at yahoo.com>
> > > Subject: 4000 Q fuel problem - tank
> > > To: Quattro at audifans.com
> > > Message-ID: <20041210010105.86539.qmail at web53910.mail.yahoo.com>
> > > Content-Type: text/plain; charset=us-ascii
> >
> >
> > >
> > > Well, I got into the noisy fuel pump problem today, and when I
> > > pulled the feed line off, it barely trickled out. Pulled it
> > > upstream of the pre-filter, ditto. Pulled the return line, and holy
> > > sh**, poured all 15 galons or so out. I filled the tank originally,
> > > thinking the problem was it was empty. Turns out the fuel gauge
> > > doesn't work. So, now I have 15 gallons of fuel in 5 gallon
> > > buckets, and one hell of a rusty tank. When I put the compressed
> > > air into the return, it blows right in. Do the same with the feed,
> > > and it blows back at me. It appears that Audi put a second "shelf"
> > > into there, so the gas wouldn't run away from the hole when
> > > cornering. Good idea, Foxes would cut out below 1/3 under hard
> > > cornering.
> > >
> > > The problem that it brings up is this, I can't get to the feed to
> > > clean it of the rust or whatever else is in there.
> > > Anyone out there delt with this before?
> > >
> > > Anyone near me with a spare good tank for a 4000Q? I'm in Oklahoma City.
> > >
> > > Tony
> > >
> >
> > _______________________________________________
> > quattro mailing list
> > quattro at audifans.com
> > http://www.audifans.com/mailman/listinfo/quattro
> >



Matt Suffern
Design Services
2 Bolin Heights | Campus Box 6200
UNC Chapel Hill
Chapel Hill, NC 27599
919 843 4965 | 919 962 5167 f
msuffern at lycos.com