3B engine problem

[Ameer Antar]

I had similar problem w/ my 5kT. Turns out the mixture was too rich. When I 
adjusted the CO screw, it worked fine again. When you press the throttle 
past 80% the ECU richens the mixture a bit to give you max power. In my 
case, the mixture was already rich throughout normal throttle range, then 
at WOT, the mixture got way more rich, which causes the car to hesitate. 
Too lean or to rich both cause the car to hesitate.

-ameer


At 03:22 AM 12/5/2000 , you wrote:
>I have a problem.  Well my car does anyway.
>
>When I put the foot down (past 80% throttle) quickly -
>i.e. flooring it - then it just feels like the engines
>cuts out totally... sort of throws your forward if you
>know what I mean.
>
>Observations - when I gradually put my foot down to
>like 5,000 rpm then it is ok .... If it floor it from
>any revs then it gives one almighty splutter.
>
>Am seriously wondering about keeping this car as it
>wants a few things done very soon including a rear
>silencer - can you believe the Audi factory part price
>for an S2 rear silencer - part only - is 1,240CHF
>(700USD)...  oh well ...
>
>If anyone can help me with why this "cutting" out
>would occur then I would be VERY grateful.
>
>Michelin man hose including the jubilee clips and the
>metal hose and the joining hose (between the two metal
>hoses) are all new.
>
>Could it be ISV? air leak somewhere? fuel pump?
>injectors? ECU?  what?
>
>Anyone think it is either air or fuel? or something
>else
>
>thanks for any help anyone
>
>Cheers
>Jase
>'91 Audi S2
>'97 GSXR600 (to go!)
>
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