Hi Everyone,

I would appreciate if somebody help me to find the firts step for this issue:
Motor runs well in range idle-6000 and 7000-12k but in range 6k-7k there is no power/very week.
I have new air filter, plugs, fuel.

May be caused by power walve, or carburator settings, carb. solenoid ?
What is the best strating point?

Thank you,
Ivan