What is your system pressure?

What are you seeing for control pressure hot and cold?

Have you used the duty cycle to set your mixture? What are you seeing there?

Is your oxygen sensor OK? A low reading will cause the brain to enrich.

Usually IME, a FD problem causes a miss or roughness rather than a rich mix.

__________________
Chuck Taylor
Falls Church VA
'66 200, '66 230SL, '96 SL500. Sold: '81 380SL, '86 300E, '72 250C, '95 C220, 3 '84 280SL's '90 420SEL, '72 280SE, '73 280C, '78 280SE, '70 280SL, '77 450SL, '85 380SL, '87 560SL, '85 380SL, '72 350SL, '96 S500 Coupe