My daughters 2002 XR100 bogs and cuts out when you whack the throttle off idle. If you relax throttle it will catch and keep running and if you give throttle smoothly there is no problem. Carb has been cleaned and rebuilt and there are no air leaks when tested. The pilot jet was increased from #35 to #38 to get rid of the cold start problem and the main is #100. I have tried all the different needle clip positions with no success. does anyone have any other suggestions
I still suspect a pilot jet issue, herk. Those small passages the jet leads to are sometimes very difficult to clean out. Also, check the mixture screw setting. It should be around 3/4 to 1.5 turns out from lightly seated.
I'll take it apart again and clean again I put a #40 pilot and it did the same thing. Mixture is good as I had it set at 1.5 and pilot jets are brand new. I agree it sounds like pilot circuit cause it will rev without bog when choke is set at half way. thanks and ill let you know how it goes