When riding around my bike sometimes backfires, how bad is this for the bike and should I try and get the problem fixed immediately? Any idea whats causing this? Just replaced the battery and the plugs.

 

I've got the same problem. Started when I put on my exhaust and k&n. any help would be greatly appreciated

 

haha funny its the same with me

 

Define backfire..... My opinion of a backfire is a super load boom out the exhaust. Does it just pop sometimes or does it "backfire".

 

It sounds like a really loud pop. usually happens at high rpm's and when I 'm easing off the throttle

 

It's normal for any engine to backfire once in a while, especially when easing off the throttle. If it does it consistently and very often, then I would research more. Usually when you put on a performance exhaust, it doesn't muffle backfires as much as a stock one will.

 

I see. Yea it is normal. The poping or backfiring is caused by a lean mixture, it will not hurt anything though. I see it alot on race 4 stroke motocross bikes. At high rpms like will pop a little or backfire.

 

Well it does happen often. By lean mixture do you mean more air and less fuel ??

 

Its just lean popping.Not hurting a thing.If you notice it running hotter than normal,you may need to richen it up some.Other than that I would leave it alone.When you changed your pipe and filter you allowed more air thus causing a slightly leaner mixture.

Leaner meaning more air less fuel.They run better a little lean anyway.

 

+1