Having issues with my sons 125. When riding it would stall when starting away from lights etc. Have cleaned out the carb and see no issues. Bike has trouble starting. When started, it idles ok then dies when you try to rev the engine - irrespective of how gently you do it. Bike stalls then wont start properly. About to change spark plug tomorrow to sdee if it helps.
Does anyone have any ideas that might help?