I got a new/rebuilt AFM and when the garage tried to adjust the CO, they said the motor was running too rich. So much so that even adjusting the CO screw could not lean it out enough.

I'm thinking that adjusting the initial spring setting on the AFM will fix this problem - but does anyone know how many notches to try?

Or is there something else that I may have missed that could be causing this? The O2 and temp 2 sensors were recently replaced.

thanks

Todd
'88 Westy