Join Date: May 2002
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Re: Adjusting Mixture Level on 86-87 Carb
You don't have to guess or use an analyser. When they use the analyser, they tune it on
the lean side typically, to meet emmissions. You can use a tach to do the same thing. You
tune it to the highest idle, Then lean it a tiny bit by closeing it maybe 1/8 turn (It's bleeding
fuel, not air, behind the throttle plates.) A shop dwell/tach is useful for this as they usually
have a low RPM range just for doing this. A range of 0-1200 RPM or so, on most I have seen.
Also keep in mind. this is an IDLE circuit adjustment. Above an idle, it has no effect at all.