Re: intro and a question

[ti@amb.org (Ti Kan)]

Mike Carelse writes:
>     Anyway, there is a plastic housing to the right of the engine, which =
> goes over the tappet cover to a "dust scoop" which bolts over the =
> injectors, and then runs into a blower of sorts, in front of the =
> distributor.
>     I heard it is called an "anti-percolation" unit which regulates =
> something about the turbo.
> 1-    Can anyone on the list verify this?
> 2-    Is it essential? (what happens if it is left off)
> 3-    Does anyone have a pic, or a diagram of how this works, and how it =
> is assembled. (the shop has lost some of the bits) and I have decided to =
> finish it myself, but I do not have a manual.

It's the injector cooling fan and ducting.  When the temperature in
the vicinity of the fuel injectors reach a certain degree (regulated
by a thermoswitch), the fan turns on to blow air at the injectors
to cool them off.  This is to prevent vapor lock from occurring, creating
difficult hot starts.

-Ti
96 A4 2.8 quattro
84 5000S 2.1 turbo
80 4000 2.0
-- 
    ///  Ti Kan                Vorsprung durch Technik
   ///   AMB Research Laboratories, Sunnyvale, CA. USA
  ///    ti@amb.org
 //////  http://metalab.unc.edu/tkan/
///