BackFire - Kawasaki Ninja 250R Forum
 
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post #1 of 7 (permalink) Old 03-25-2010, 04:12 PM Thread Starter
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Location: chesapeake, va, us
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BackFire

Twice now when starting my 2010 ninja 250r it has backfired. Both times it was cold start. Anyone else had this problem? Bike has less than 1000miles on it.
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post #2 of 7 (permalink) Old 03-25-2010, 06:31 PM
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Mine has a handfull of times.(I have had mine almost exactly a year, and 10000 miles) I haven't made a note of the exact conditions. I can't help but think that maybe someone has twisted the throttle with the bike off.
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post #3 of 7 (permalink) Old 03-26-2010, 04:53 PM Thread Starter
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Thanks for the reply Kenny, so it must be a common thing. I think it has to do with condensation in the exhaust. The first time it happened I washed the bike then put it away. The second time was yesterday when I rode it to work it was very cold and very warm when I left is when it backfired while starting.
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post #4 of 7 (permalink) Old 03-26-2010, 06:32 PM
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It wasn't that cold yesterday :-P. The only problem I had yesterday was storage. I had to wear so many layers on the way to work, and I had no where to put the extra clothing on the way home. No backfires though.

Another possible cause is high idle. When the ignition is turned off, the engine continues to pump unignited air and fuel into the exhaust. If the idle is high, quite a bit of fuel will be pumped into the exhaust while the engine spools down, only to be ignited when the engine is started again.

...just a theory anyway
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post #5 of 7 (permalink) Old 08-11-2010, 05:11 AM
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A Back-fire or backfire is an explosion caused by a combustion engine that is produced in the intake system or exhaust instead of into the combustion chamber. The same term is used when the unburned fuel or oil is fired somewhere in the exhaust system.

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post #6 of 7 (permalink) Old 11-11-2012, 11:08 AM
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i have a jardine GP1 full and it fires like crazy. like 5-6 druing gear changes. ?????
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post #7 of 7 (permalink) Old 11-12-2012, 07:10 AM
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I have a 2012 with similar conditions...I have put all 1400+ miles on it since I bought it new at the beginning of October. It has backfired twice on startup since owning it...


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