If the aux air regulator is stuck closed, it will present these symptoms
with a cold engine. BTDT.

When cold, it should be open.  The bi-metal is heated by 12V (and
ambient engine room temp) and SLOWLY closes the opening until the engine is
warmed up.  Similar to an electric choke operation except a choke opens up
and the aux air reg closes.

Now finding a new one's a bitch right now.  Bosch hasn't discontinued it,
but they are sure slow in re-supplying main warehouse in Atlanta.  Time to
find a good used one.  They're the same on 75-79 Type 2, 80-83.5 Air Cooled
Vanagons and the venerable 83.5-85 Wasser.
--
Jim Thompson
84 Westfalia 2.1 "Ole Putt"
73 K Ghia Coupe "Denise"
72 411 Station Wagon "Pug"
oldvolkshome@gmail.com
http://www.oldvolkshome.com
**********************************
On 8/24/06, roger sisler <rogersisler2000@yahoo.com> wrote:
>
> Well,the  continuing problems with the digijet fi system has brought me to
> ask about this item. I have stalling at cold engine. When it is very well
> warmed up,it will idle ok.Bad gas mileage and getting worse. Could this be
> a bad fuel regulator? What are the symptoms of a bad fuel regulator?
> Seems to get a lack of fuel enrichment when cold. I get unburnt fuel smell
> when warm.like the fuel enrichment is happening when warm,instead of when
> cold. This is 1.9 WBX. Any ideas? I have gone through the Bentley page on
> fi diagnosis. All is well,except fuel enrichment.I cannot get the engine
> to idle ,to get a reading.I swapped the ECU out,but still
> nothing.Thanks.Roger