Originally Posted by culliganman
Ready to pull my hair out!
Bike is running very lean, happened all of a sudden have had the carb apart 3x to no avail, boots look good you could eat off the carb its so clean. What are the odds the timing chain jumped? I do notice a air blast,poof type sound when starting it that seems new if that makes a difference not a backfire its coming from the motor somewhere.
You might check to see if your muffler is partially stopped up.