[DS720Rider]

Hi everyone, I have been rebuilding this quad for a few months and finally got the engine running again. It starts on the first kick, but when you give it full throttle, the bike begins to bog down and not rev out to the higher rpms. Any ideas?
My stepfather thinks it is electrical problem.

Thanks for your time,
Engine is:1992 Honda 250x
1998 300ex Frame and chassis
250x CDI and Rev Box
250x wiring harness

 

[69quadracer]

If you still have the stock cdi try it your rev box may be bad, also check you carb jets may have trash in them