misfire under light load - solved

[Bernie Benz]

If you have oil in the cap you have a partially blocked CC breather  
system. Check it out!

On Jan 30, 2012, at 12:52 PM, 200q 20v wrote:

> Thanks for all responses. I followed on my plan to change cap/rotor
> first.
>
> Found some moisture/oil in the cap with no traces of arching and  
> cracks
> though.
>
> Securing a new cap with no top clip with zip ties was a major PITA ...
>
> Now all seems back to normal
>
> -----Original Message-----
> From: 200q 20v <a200q20v at gmail.com>
> To: 200q20v at audifans.com
> Subject: misfire under light load
> Date: Sat, 12 Nov 2011 18:01:27 -0500
>
> Fellow experts,
>
> Driving in 4th gear, 2000 rpm, increasing throttle feels like a
> misfire in several cylinders. E.g. virtually no power.
> It is not very pronounced when engine is cold.
> It appeared to start after last track event. Leaving the track I
> noticed slightly rough idle and above mentioned misfire while driving
> home.
> Changed several years old spark plugs (found the cheapest F5DPOR on  
> Amazon).
> Virtually no changes. There are no vacuum leaks (cold engine pulls
> full boost with no problems) no codes in ECU.
> Strangely enough during recent heavy rain misfires were much less  
> pronounced.
>
> If left on idle a few misfires a minute can be heard.
>
> Wires and distributor cap are about 5 years old, much less then
> average miles per year.
>
> I wonder if anyone has any ideas. I plan to look at replacing cap /  
> rotor next.
>
> Eugene.
>
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