I have a 2008 kx250f that just stopped running while riding it. No spark at all. I replaced the stator, coil, and harness. I also purchased a used CDI off of a 2007 from ebay and still no spark. The grounds seem fine. Any other ideas? I know the used CDI could also be bad but what are the chances? Any help would be greatly appreciated, especially if you are near DFW. Previous owners brought it to a shop and this is their diagnostic... See attached

 

Hello mate did you find out what the problem was in the end got the same issue and done exactly what you have and still nothing thanks