Start by cleaning the carburetor and making sure fuel is passing through the
filter:
http://www.buggydepot.com/buggy-tech-center/150cc/GY6-150cc-carburettor-cleaning\
-guide/10/
--- In yerfdoggx150@yahoogroups.com, "freakychef" <freakychefb@...> wrote:
> Thanks for the input, I had to buy another bearing. got it on and running. Now
if anyone has any ideas on the backfiring.