smwetzel
10-15-2009, 09:46 PM
I have a 93 300ex that i bought a couple months ago. it runs great, seems to have full power, doesn't smoke. I have 2 other 300ex's to compare to. It will rev great in neutral or when riding, but when the throttle is stabbed, it will die out and not recover until the throttle is released. If the choke is ran half way closed, it will run great and not die out when the throttle is stabbed. I have completely disassembled and cleaned the carb with carb cleaner, i tried adjusting the air screw, i went up to 40 pilot from stock 38, i also tried a 125 main up from stock of 122. I have tried the needle jet on all 5 notches. I did each of these at different times and none have corrected the problem. The diaphram for the accelerator pump was leaking and i replace the whole assemblyThis 300ex is stock, except a uni air filter. Even the muffler still has the spark arrestor. Any help would be appreciated, sorry for the long post, but i felt it best to describe everything.