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Originally Posted by emmydotnet
Duke:
thx for the explanation. I am at about 52% idle and 57% 2500RPM. I know I am on the lean side. My cold start is within 5 sec of cranking, but seems could be better because I remember it used to be able to start right-up within a second. I have done quite a few things already to make sure everything else are working properly...things that I have learned via the forum and lots of readings, and have resolved quite a few things...rough idle, high idle to name a few.....I will try and adjust the mixture a bit more to the rich side....
thx,
emmy
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You're base mixture is a little lean at both idle and 2500 and is well within ten percent, so you have the option of richening it, and this should not effect measured emissions. If you richen the base mixture to the range of 40-45 percent duty cycle at idle, you will probably experience quicker colds starts, and the duty cycle deviation between idle and 2500 should still be within the 10 percent spec.
I reviewed my data and my idle duty cycle reading was in the range of 40-45 percent (It should move around a bit as you observe the meter) at idle and 50-55 percent at 2500, so the "averages" are actually about 42.5/52.5, which puts it right at the spec limit, but since my cold starts are excellent and emissions are okay, I left it alone.
Duke