4000 Q fuel problem - tank

[Keith Lawyer]

Can the screen not be removed?  Angle grinder, eh?  You're brave!

Keith L

>>> "Matt Suffern" <msuffern at lycos.com> 12/10/04 09:11AM >>>
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