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Discussion Starter · #1 ·
my 1989 yamaha exciter is backfiring through the pipe only when i shut it off one little poof of black smoke and a little flame comes out and thats all the sled its self runs great and lots of power nothing is wrong when it runs but one time i started it , it backfired through the pipe and nothin else is there some thin wrong or just normal sometimes?
 

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Are you letting the sled return to it's normal idle before killing the motor? If not, this will happen due to excess gas in the pipes. To stop it, let the motor idle all the way down for a couple seconds and then kill the motor.
 

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Discussion Starter · #3 ·
hay thanks for the info and now that i think about it your right i usually dont let it return to idle thanks for the help
 

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Up I was going to say that before when I read this, but I didn't have the time to reply... ACMan's got it right I beleive.
 

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I let my sled get down to sustained idle before killing it...
 
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