RE: Setting CIS fuel mixture

["Aaron Ness" <aaron@makuta.com>]

That's right - I had the geometry of the fuel distributor confused.  In
light of that, why would the plug ever affect the mixture?  The post to
which I replied said this is the case on some cars, but not others.  While I
don't have enough information to disagree, how is this possible?

Aaron
'82 Scirocco
'84 Scirocco
'70 Bug - Hibernating
'87 Jeep Cherokee 4.0


> -----Original Message-----
> From: Chris DeLong [mailto:green536@hotmail.com]
> Sent: Wednesday, September 13, 2000 12:30 PM
> To: aaron@makuta.com; rabbit16v@prodigy.net; Scirocco-l@scirocco.org
> Subject: RE: Setting CIS fuel mixture
>
>
>
>
> The fuel mixture hole is not after the airflow sensor plate.
> It allows air
> to enter between the air filter and the sensor plate.
>
>
> >It is a vacuum leak (you have a hole in the intake somewhere
> after the
> >airflow plate) but it doesn't seem to behave as one.  Are
> you saying that
> >sometimes the mixture doesn't change when you plug the hole?
>  That seems
> >kind of odd - it should be pulling in just a little extra
> air (whatever you
> >can fit through that little hole) when the plug is out, so
> the mixture
> >should get a little more rich when you plug it.
> >
> >The plug was gone from my '84 when I got it, and it ran
> great, although I
> >never had the CO content checked, and I never plugged the hole.
> >
> >Aaron
> >'82 Scirocco
> >'84 Scirocco
> >'70 Bug - Hibernating
> >'87 Jeep Cherokee 4.0
> >
> > > -----Original Message-----
> > > From: owner-scirocco-l@scirocco.org
> > > [mailto:owner-scirocco-l@scirocco.org]On Behalf Of Dave Ewing
> > > Sent: Wednesday, September 13, 2000 8:06 AM
> > > To: Scirocco List
> > > Subject: Re: Setting CIS fuel mixture
> > >
> > >
> > > No offense Dan, I would never mess up a air plate to pull the
> > > plug out.  All
> > > you do is tap the plug itself with some type of self tapping
> > > screw or even
> > > drill a tiny hole in it then thread in a tiny screw and pop
> > > it out.  When
> > > you drill a hole into either side of it (and this differs
> > > between cars) this
> > > can create a vaccum TYPE leak.  There are cars that when I
> > > adjust the air
> > > fuel mixture, the mixture will actually change once I plug
> > > the adjustment
> > > hole.  I am not sure why, but it does.  This makes me believe
> > > that on some
> > > cars that the reason the adjustment hole is plugged is more
> > > than to just
> > > keep people from messing with it.  I hope I'm right on this
> > > and I hope this
> > > helps.
> > >
> > > Dave
> > >
> > > > I just nearly botched this the same way myself.  I ended up
> > > by drilling
> > > two holes, either side of the plug.  This way I could grab
> > > the with some
> > > needle nose pliers.  It looks like ass, but it got the
> thing apart.
> > > >
> > > > I was really not looking forward to dismantling the whole
> > > fuel distributor
> > > for that little plug...
> > > >
> > > > In hind-sight, you might try tapping the plug down GENTLY
> > > to dislodge it.
> > > Once mine moved a little, it pulled right out.
> > > >
> > > >
> > > > Dan Brideau
> > > > http://www.hobbyetc.com/scirocco/
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > > At 01:28 PM 9/5/00 -0400, EuroVWtek@aol.com wrote:
> > > > >Dear List,
> > > > >
> > > > >     I went to set up my fuel mixture on my 85 8v and I
> > > found that the
> > > > >anti-tampering plug was still stuck in the hole where the
> > > 3mm allen bolt
> > > is.
> > > > >So then, I did as the Bentley said and drilled a 3/32 in.
> > > hold into the
> > > > >aluminum only;not the hard steel bottom, and then I
> > > threaded in a sheet
> > > metal
> > > > >screw which is supposed to be used to extract the plug
> > > with. Well, after
> > > > >getting the screw in there, I then proceeded to pull
> > > straight up on the
> > > screw
> > > > >head with pliars. The plug did NOT want to budge. Finally
> > > after more
> > > vigorous
> > > > >pulling, the screw ripped out of the soft aluminum and now
> > > I am afraid I
> > > have
> > > > >too little aluminum left to be able to get another
> screw to bite in
> > > there.
> > > > >HELP! Hasa ny one else had to get one of these out? If
> so, did you
> > > encounter
> > > > >the same problem? Your time and help is much appreciated.
> > > > >
> > > > >Thanks,
> > > > >
> > > > >Tim Fritz
> > > >
> > > >
> > > >
> > > > --
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> > >
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>
>
> Chris DeLong
> ICQ#45030867
> Seattle, WA USA
> '80 16V Rag
> '78 Scirocco (for sale)
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> '84 Jetta Diesel (for sale)
> '80 Jetta
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