05 YZF450r ?

3 replies to this topic
  • Maxxim1403

Posted March 19, 2009 - 01:37 PM


Have a 05 yzf450r that has issues. Why does the header pipe get glowing red and pops very loud when throttle open. I have tried everything from jetting, valve adjust. still pops and gets red. Any ideas?:)

  • FinchFan194

Posted March 19, 2009 - 02:36 PM


This will happen anytime you are not riding the bike my 04 will heat up like that in a heartbeat if it is being run on my stand.

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  • Maxxim1403

Posted March 19, 2009 - 05:35 PM


What about the back firing issue? Loud (ear piercing)popping when throttle open.

  • FinchFan194

Posted March 20, 2009 - 02:52 PM


You are probably lean let your fuel screw out a full turn and see if it improves and check for an exhaust air leak-most likely at the header.

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