Why is there fuel in my air box?

[ed armstrong]

--- Ti Kan <ti at amb.org> wrote:
> Jeremy McNeil writes:
> > The subject says it all.  About a year ago I
> noticed a
> > puddle of gas under my car ('87 4k csq) in the
> > vicinity of the air box.  I took it to a mechanic
> and
> > he said the fuel distributor needed to be
> replaced.
> > He did so.  However, I've still noticed a gas
> smell
> > and today saw another puddle of gas under the car
> > while it was idling.  I opened the air box
> (finding
> > that the air filter put in by the mechanic was 3/4
> > length, rather than full ... grr) and found it
> full of
> > gas.
>
> It seems obvious that fuel is leaking out from
> somewhere in the
> vicinity of your fuel distributor.  You should check
> that all
> the lines connected to it are tight and there are no
> cracks.
> If that doesn't yield anything obvious, perhaps fuel
> is leaking out
> of the center plunger on the bottom of the fuel
> distributor.
> You said your mechanic replaced the fuel
> distributor.  Are you certain
> he actually did that?  With a new one?
>
> Be very careful with fuel leaks... fire hazard!
>
> -Ti
> 2003 A4 1.8T multitronic
> 2001 S4 biturbo 6-sp
> 1984 5000S turbo
> 1980 4000 2.0 5-sp
> --
>     ///  Ti Kan                Vorsprung durch
> Technik
>    ///   AMB Laboratories, Sunnyvale, CA. USA
>   ///    ti at amb.org
>  //////  http://www.amb.org/ti/
> ///
>


I believe on these cars (like my 85 Coupe GT) there
was a small hose that went from the CIS differential
fuel regulator to the airbox. This was designed so
that if the regulator failed and leaked, it would leak
into the airbox, keeping fuel away from the exhaust
manifold. This could be your problem.


=====
-ed

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