450 sparks


1 reply to this topic
  • yzracer213

Posted January 07, 2007 - 03:08 PM

#1

i have an 04 450 and when i overrev it has flames coming out the exhaust.
when im slowing down in 4th gear it backfires alot with many sparks and flames.
im new to the 450 and was wondering if that was normal or if i should make adjustments on the bike

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  • grayracer513

Posted January 07, 2007 - 07:10 PM

#2

First, you can stop over revving it. Second, read:

http://www.thumperta...599#post3710599

What the sparks are about is beyond me, unless you have quite a bit of carbon built up in the exhaust, which shouldn't be the case.





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