Reply to thread

Message: [QUOTE="parkerCR, post: 586468, member: 25783"] A year ago when my '01 CR250 was close to stock I changed out the S-9 nozzle for the S-7 nozzle and it helped the low end jetting great. I also leaned the pilot to a 27.5 Now I have: V-force FMF Fatty Exhaust Boyesen Power valve Cover FMF Turbine Core 2 Silencer FMF recommended one clip leaner on the stock slide, a 30 pilot, 400 main and 2 turns out on the AS. These specs are in So Cal at 70 degrees with 0% humidity. I am riding close to sea level, with a high percentage of humidity and it is about 55-65 degrees. I am currently running: 410 Main S-7 nozzle 30 pilot 1 3/4 turns out on the AS Stock setting for needle clip position (3rd) I am no expert at carb tuning but when I pulled out my plug to get a reading today, all day it was white, then after slow trails it was black. When I was able to hit more open areas and clean it out for a while in 3rd gear it would be white. Sometimes half-white, half-black. this is really strange I am wondering if I need to go back to the stock S-9 nozzle and it will help get things back closer to a healthier range. I know this question has been asked but I am curious to know any thoughts that might make things a little easier. Thanks [/QUOTE]