4000 CS stumble on way to redline

[Huw Powell]

>  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/