I am working on my EX250. The bike will not idle without chock but seems to run fin at the higher RPMs. I removed carbs and cleaned them, the best I could do, with carb clearner. However, when I put everything back together I have the same problem. Any ideas out there???
That is the effects of the timing retard, most likely.The effects are usually worse with after market exhaust that has not been fine-tuned, but even stock will have noticeable lag.It has been a few years, but the impression I got, back when I had the 2K ZX9,was the Dynojet kits were more generic,and did not like them because required drilling.By generic I mean they did not seem to do testing on the specific models.