My F4i is so rich it floods when you try to start it. It was my bro's and it was gradual when it started. I just checked the valves and all the intake valves are way out of spec. most are so tight i cant get a feeler guage between them at all. Yours probably isnt that but thought I'd throw it at ya.
'99 CBR 600 F4 Silver, Carbon Fiber Grips, Levers, Mirrors, Stainless Steel Muzzy Slip-on, 520 Stealth sprocket set 15/47, Factory Pro Stage 1 TI jet kit, Reverse Indiglo Guages, Goodridge SS Brake lines, Custom Carbon Fiber Seat, rear turnsignal eliminator, rear brake LED Bulbs, F4i Rear Shock
'87 Yamaha XV1100 Virago Black/Red Fireball, Mac slash-cut pipes, custum air filter, clear turn len's, Lots of Chrome