frequency valve, 200tq '89 MC2

[edkellock at juno.com]

Yup.  Don't see that going anywhere anytime soon.

On Wed, 24 Jan 2001 20:37:13 -0500 "Dave Aukerman" <aukdav at wcoil.com>
writes:
> Congrats on the new ride.  Hope the V8 5spd is still in the stable.
> 
> Dave
> 
> ----- Original Message -----
> From: <edkellock at juno.com>
> To: <orin at wolfenet.com>
> Cc: <quk at isham-research.freeserve.co.uk>; <kbogach at home.com>;
> <quattro at audifans.com>
> Sent: Wednesday, January 24, 2001 8:00 PM
> Subject: Re: frequency valve, 200tq '89 MC2
> 
> 
> > Speaking of which...
> >
> > My newly acquired 89 200q MC2 has just been treated to
> > new O-ring seal on the dipstick.  The old one pretty much
> > disintegrated in my fingers as soon as I tried to remove it.
> >
> > So now, I'm wondering if the mixture screw needs a little
> > fine-tuning.  I believe the idle speed is a tad low since the
> > new O-ring.  It is quite steady, but low.  Before, I'm pretty
> > sure it was fairly steady, but a bit higher.
> >
> > Ed
> > Colorado Springs, CO
> >
> > On Wed, 24 Jan 2001 13:25:59 -0800 (PST) Orin Eman
<orin at wolfenet.com> writes:
> > >
> > > I've seen this when someone has messed with the mixture screw and
set it way
> > > rich.  I think the valve fails to open when the duty cycle drops
down to 5%.
> > >
> > > The two cases can be distinguished by hooking up a duty cycle
meter.
> > >
> > > If the duty cycle is going down to 5%, you have to work out why. 
Just
> > > using the mixture screw to bring it back up may be masking the real
problem.
> > >
> > > Orin.