also it backfires when you let off the throtle and not realy getting any kind of smoke from the tail i have taken the carb apart and cleaned and reinstalled also after it does start and run for a short time backfiring when revs are coming down it does not start again and it is a kick start so it is noo fun please help

 

It should say what model it is by the steering stem. You should be able to see this by turning your forks all the way to the left.