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I've got a naraku 2000 torque spring in it and ever since I've had that in the bike runs rough under full throttle with it could this be affecting it
Do I need to adjust air mixture screw and needle settings I tried the 68 jet yesterday and it was spluttering under full throttle
I've got a peugeot speedfight 4 50cc and want to upjet it. I've got a 75 jet and a set of 60-68 jets but not sure which one to use. Can somebody...