yz450f backfiring


1 reply to this topic
  • mpetlik

Posted January 24, 2009 - 02:48 PM

#1

I recently rejetted my bike and put an aftermarket pipe on it. the bike backfires pretty badly with flame actually coming out the tip. what could be the cause of this and how can i fix it?

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  • grayracer513

Posted January 24, 2009 - 04:05 PM

#2

From the Common Threads Sticky:

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

http://www.thumperta...613#post3350613





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