CO adjustment plug question

[kkrup62 at hotmail.com (Karl Krupke)]

Hi List,
    The metering access hole plug wasn't always metal... early Mk1's used a 
rubber plug with a wire through the center, wire comes up vertically about 
2" and ends in a small loop. Designed to be removed for adjustment then 
replaced, much more convenient I think than the metal plugs if you're having 
to diddle with mixture often for whatever reason.
    I think those old style rubber plugs got superseded in early '80's, but 
if somebody wants to dig around in ETKA you might find a number (eh... good 
luck finding the part, though).

Karl

>From: "Dan Bubb" <jdbubb@xxxxxxxxxxx>
>To: "Camron D. Crouse" <camron@xxxxxxxxxxxxxxxxxx>
>CC: scirocco-l@xxxxxxxxxxxx
>Subject: Re: CO adjustment plug question
>Date: Mon, 7 May 2007 15:23:18 -0400
>
>The hole is "outboard" of the metering plate in the sense that air flow 
>through the hole still has to go past the metering plate to get into the 
>engine so all is good.
>The concern about keeping crud out is a real one though. Generally have to 
>squirt some carb cleaner down the hole at the set screw so you can insert 
>the allen wrench.
>I think the original purpose of the hole was not only to keep crud out but 
>to keep people from screwing with the setting.
>Dan
>
>From: "Camron D. Crouse" <camron@xxxxxxxxxxxxxxxxxx>
>To: "Peter" <peter@xxxxxxxxxxxxxxx>
>Cc: <scirocco-l@xxxxxxxxxxxx>
>Sent: Monday, May 07, 2007 2:59 PM
>Subject: Re: CO adjustment plug question
>
>
> >>> Hey all,
> >>>
> >>> Anyone know how to remove a partially drilled-out mixture
> >>> adjustment plug?  I'm working on this '87 16v and the plug
> >>> has been partially drilled out - the aluminum part.  The
> >>> hardened steel part of the plug, well, nothing's touching
> >>> that so far.  From the diagnostics I've done at this point,
> >>> this thing appears to be running WAY rich.
> >>>
> >>> That and I need to see if I can scare up a DPR test harness.
> >>>
> >>> Daun Yeagley - Wilmington Ohio
> >
> >>>Peter wrote:
> > > If you want to fill it in, and the stock plug won't fit, or isn't
> > > available, I'd clean it up, and use JB Weld on it.
> > >
> > > Peter
> > >
> > >
> > >
> >
> > If this hole is left unplugged, would this constitute a vacuum leak and
> > contribute to poor running?  Or does plugging it up merely keep the crud
> > out?
> >
> > - Camron from Vancouver, WA USA
> >    '86.5 Black 16V 2.0L
> >
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> >
>
>
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