635 static timed worked o.k. Hasn't been really driven, cleaned out.,, sometimes random missing at idle.
Timed it. Plugged vacuum lines, 2000 rpm. Set, reattach vacuum lines., idled low. Adjusted big bass throttle body screw out to raise idle to 1000. Rev gas pedal, stumbles, like floods for a second, then revs.
What did I do. When is the AFM little screw in play?