Backfire?

-Whiteside- · Jun 21, 2009

I have about 520 miles on my 09' ninja SE and I've just recently noticed that it has backfired twice now within a few days. The backfires occurred while starting the bike both times. The bike did not stall, but seemed okay and ran fine as usual. Also, I have not made any exhaust or engine mods. Does anyone have any suggestions or input? Is this normal? Has this happened to anyone else?

-Hellboy-

Boywonder · Jun 21, 2009

I asked this a little while ago and the guys here were nice enough to let me know it's not a big deal.

http://www.newninja.com/questions-and-answers/backfire/msg36637/#msg36637

hi-tech · Jun 21, 2009

Yeah its normal... it sounds like a shotgun.

Blue Ghost · Jun 21, 2009

Small backfire or spitting is normal on start ups from time to time on carbureted vehicles, however it should not be the norm. Backfiring on deceleration or acceleration is a sign of other problems.

-Whiteside- · Jun 22, 2009

Thanks for the advice guys!

meegari · Jun 23, 2009

hey I had this happen yesterday during start up and i have only 130km on mine, I think it was because I had the choke on and didnt need it.

hopefully doesnt happen anytime again soon effing scared the life outta me!!

EnzoMatrix · Jul 16, 2009

My 09 with about 1900 mi on it got me over the weeked and scared the crap out of me ..

spooph · Jul 16, 2009

it will probably also go away as the temperatures drop....

and Ghost, if there's spitting and backfiring on decel, it's not problems, it just means the beasty wants to keep running.

It's got enough juice, use it! J/K man, you be right, and it be rich...

StockWall · Jul 16, 2009

More than likely you are getting backfires because of running to high of octane in your bike. Unless it is super hot out, you dont need anything higher than 87 octane. Our bikes dont run hot enough to burn high octane gas. A backfire is a build up of carbon or unburned gases that ignite in your exhaust pipes. And it builds up because it is not burned all the way........this has been discussed many a time on here. haha. look it up.

hi-tech · Jul 16, 2009

they should make an exhaust that looks like a shotgun for those backfire moments

meegari · Jul 18, 2009

wow guess i must of missed that one, I have been using premium in mine!

StockWall said:
More than likely you are getting backfires because of running to high of octane in your bike. Unless it is super hot out, you dont need anything higher than 87 octane. Our bikes dont run hot enough to burn high octane gas. A backfire is a build up of carbon or unburned gases that ignite in your exhaust pipes. And it builds up because it is not burned all the way........this has been discussed many a time on here. haha. look it up.

hi-tech · Jul 18, 2009

meggari how is that bike riding coming along

meegari · Jul 20, 2009

Its coming along awesome, passed my test 2 weeks ago!! First Time Woot Woot, so after taking a knowledge test, an MSF course and then going on rides for about a month it's a relief!!!! The only thing is now by insurance company is trying to rip me, they won't lower my insurance premium even though I have the class 6 (motorcycle) now, so i'm going to cancel and go with my regular insurance company who would'nt insure me as a learner!!?? its messed up here in Alberta, Canada with the new rules!

hi-tech · Jul 20, 2009

that sucks