RedRocket said:I say your running rich.
when you backfire it means that all the gas isn't getting burned in the cylinder. Then all the leftover gas is creating a second explosion in your exhaust system.
you can either down jet your carb a little or you could try using a hotter spark plug. the hotter spark plug will sometimes give a more efficient burn.
hmmmmmmmmmm
thats a new thing!!!!!
when i bought the bike the previews owner got the mixture rich...and had a deferent spark plug...and i saw on the internet that the stock spark plug is deferent..i was like...why they did it
now i understand