Mixture setting

[Jesse+ Clendenning]

Thanks folks, this is my first post. I have had several Audi's and am having
a problem that confounds me. This car is an '86 5000tq - single knock sensor
MC (as you already know). The trouble I am having is setting the mixture
using the my Sunpro. I have done this on several other cars I've owned and
others. My trouble is the duty cycle at idle stays at 5% no matter which
direction or how far I turn the 3mm allen. Now if I rev the engine and check
at different RPM settings, the duty cycle increases. @3k rpm it reads ~50%
duty cycle. Even higher RPM's yeild me even higher duty cycles. If I unplug
the O2 sensor I get 50% like I should. It's been confounding me for some
time. This car is a recent aquisition and I have redone the head and checked
everything for vacuum leaks. I mean everything. Boost is good, but who wants
to be riding at 1.8Bar without a stable mixture... NOT me. Thank you for the
help you can yeild. I have searched the archives and cannot find anything
quite like this. 

Thanks guys and I hope to be a contributing member to the list from now on.






_______________________________________________________
Send a cool gift with your E-Card
http://www.bluemountain.com/giftcenter/