Not to derail the thread, but I have lean running issues with my USA 80 SC.
When cold, and accelerating from 1-2.5k RPM, AFRs jump into the 15s, then drop right back into 13s after I hit about 2800 RPM.
When warm, my idle is at 13.9 with WOT at about mid 12s as it should.
What would cause the instance of cold lean running operation only in the beginning phase of acceleration?
I suspect my cold CP is off... Hence the lean condition only when cold. But that doesn't explain the 2500 RPM window of lean, then back to normal rich after the RPMs increase. Or does it?
