i have a 1995 targa lx moped and i just got it running a couple days ago. it ran fine until about 10 minutes in, it suddenly died at full throttle and brought me to a braking stop. after it cooled down, i could get it running again. but then the same thing would happen, and now i can’t get it started at all. The spark plug is brand new and the carbuerator is pretty clean as of the looks of it. Any Thoughts?