4000 CS stumble on way to redline

[Adam A. Luy]

 Little late to the convo here, nut I'm all for the FPR too. This happened to me in my 84 red CGT. I actually bought the car that way, and the PO said that high rev stumbling/jerking was one of the problems he knew about on the car. Popped in a used FPR I had sitting around and voila!, problem solved.

Cheers,

-Adam


-----Original Message-----
From: quattro-bounces at audifans.com [mailto:quattro-bounces at audifans.com] On Behalf Of Huw Powell
Sent: Thursday, September 22, 2005 11:17 PM
To: Eric Henning
Cc: quattro at audifans.com
Subject: Re: 4000 CS stumble on way to redline


>  I was giving my recently acquired 86 4000CS (2.2 l)an Italian tune up 
> (wind the pi*s of of the engine to
> redline) and right at 5000 rpm (redline is 6500 I
> beleive) the engnien starts to stumble terribly. 

As stated here previously... if you hit a "brick wall" at about 5200 rpm, you have the wrong FPR.  If you can get past that and slowly struggle upward...

> Otherwise runs very smoothly.  Has new plugs and wires, new air 
> filter,  cap and rotor look a little worn, no idea how old timing belt 
> is

If cap and rotor "look a little worn" they are probably seriously in need of replacement.  As might be other "tune up" parts.

--
Huw Powell

http://www.humanspeakers.com/audi

http://www.humanthoughts.org/
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