i have a speedfight 70cc topend and a tt racing exhaust and I'm running a 21mm carb with a K&N air filter the metal mesh one it pulls of okay but when full throttling it it seems to bog out i cant tell if its sucking to much air or fuel if that's the problem its fine when i slightly twist the throttle its okay it pulls okay to i can get 50 - 60 out of it but the carbs starts to bog what could it be? also when i let go of the bars (no handed) it pulls and leans to the left what could that be, possibly the wheels arent alligned
Bogging is lean. Sputtering is rich. If it's bogging then go several sizes up on the main and then start coming back down until the sputtering (from making it rich) stops. If it runs about the same on two different jets, pick the larger jet.
