Air metering valve - MC-2

[Joseph Rae]

Put it on a duty cycle meter and I BET that it runs lean when it "stumbles"
or "feels week in the upper RPM" I described it as hitting a brick wall. Not
a whole lot of fun.

Joe

----- Original Message -----
From: "Joshua Van Tol" <josh at spiny.com>
To: <quattro at audifans.com>
Cc: "audi list" <quattro at audifans.com>
Sent: Thursday, January 11, 2001 3:05 PM
Subject: Re: Air metering valve - MC-2


> At 3:54 AM -0800 1/11/01, james accordino wrote:
> >--- isham-research.freeserve.co.uk at pop.pol.net.uk,
> >quk at isham-research.freeserve.co.uk wrote:
> >>  One of the many outstanding jobs on Puff the Magic
> >>  Wagon is the
> >>  replacement of the fuel metering head.  I've had the
> >>  typical symptoms
> >  > of upper O-ring failure for some time.
> >>
> >
> >What are they?
>
> I'm wondering this as well, as I'm suffering some symptoms that seem
> to be metering head related on my 1987 5kcstq.
>
> Symptoms are: Occasional miss at idle (maybe not related to the other
> problem), and (seemingly) a miss at >3000 rpm under higher throttle
> settings. Sometimes it pulls beautifully from idle to 6500, and
> sometimes it hits a wall at 3000-4000. Other times it's less severe,
> manifesting itself as a weakness in the upper rpm range. The miss
> isn't like a bad plug wire, where you have a regular sharp kind of
> vibration, but rather a sort of random misfire.
> --
> Joshua Van Tol -- josh at spiny.com
>
>