Back Fire

[Bhunter650]

Ripping around for the last couple of weeks I have noticed that I back fire here and there. It is quite spottie but it happens. Any Ideas?

 

[MrSled]

Could be a little lean or even a little fat causing that.

 

[Ganz]

It's just a grizzly fart.
Just don't stand behind it when it does it!

 

[clutch]

The more my air filter accumulates the more it pops out the exhaust. When it pops 5 or 6 times on a ride it's time to clean the filter.

 

[SM Yam]

My filters are clean and mine started back firing this weekend on a mud run ...and when I put it in dif lock and go to give it... it sort of bucks then goes like hell...... ???
SM Yam

 

[SledderSteve]

Could be a little lean or even a little fat causing that.

Uhh, could you be a little more vague boss?

Yikes! I was just joking, don't abuse me.

 

[MrSled]

4 strokes act the same in both conditions thats what make them tough to figure out... can tap off the intake air and see if that help or makes it worse.

 

[SledderSteve]

Thanks for the clarification.

I've got one that now likes to backfire on shutdown but I haven't taken the time to look into it yet. Dusty air filter maybe?

 

[MrSled]

I would clean filter 1st...easiest thing to try.

 

[huntergrizz]

Mine also backfires after a long run at higher speeds.Doesn't do it very often. Could be from muffler loading up with fuel. So when your air filter starts plugging up that would make sense.