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Old 08-06-2007, 08:23 PM   #1
Slowkat
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Backfire thru carb?

What generally causes this?
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Old 08-06-2007, 08:30 PM   #2
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Ignition timing gould be off
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Old 08-06-2007, 08:31 PM   #3
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its a 4 wheeler, got less then 100 hours. 2006 Kawak..650 twin...
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Old 08-06-2007, 08:34 PM   #4
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Details. What happened before this started?
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Old 08-06-2007, 08:35 PM   #5
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carb or fuel injection?
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Old 08-06-2007, 10:01 PM   #6
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carbed for sure, any recent mods? last service? i deal with these things on a daily basis, and that's something i rarely see
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Old 08-06-2007, 10:12 PM   #7
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its because its a twin my svs do it every now and then
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Old 08-06-2007, 10:31 PM   #8
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check/set valve tolerances. check the iggy timing as well. but it would have to say valves first, then iggy, then cam chain/tensioner. just my three pennies short of a nickel.
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Old 08-06-2007, 10:45 PM   #9
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too much gas. Sometimes foul out plugs could have the same result. Replace plugs and it should start.
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Old 08-12-2007, 07:08 PM   #10
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just a little more info. The bike seems to run fine, start fine and has plenty of power, all stock, but only intermitently backfires thru one of the carbs at part throttle.
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Old 08-12-2007, 08:50 PM   #11
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Possibly too lean, low speed circuit stopped up. Carbs not synched properly. Lastly would be valve adjustment.

Hope this helps.
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