YZ 450F running rich?

6 replies to this topic
  • 127

Posted December 13, 2006 - 08:29 AM


Ok so I put on my procircuit TI-4 exhaust and the sticker burnt off of the exhaust pipe... what's not right here?

  • grayracer513

Posted December 13, 2006 - 09:00 AM


There was a "Sticker" on the exhaust pipe? That sounds like a flawed concept.

  • 127

Posted December 14, 2006 - 08:54 AM


It was the lable that says TI-4... I called PC and they said it sounds like it's time to repack the muffler... I only have 10hrs on the new exhaust system but he said that would be one reason it's running hotter...

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  • flintlock28

Posted December 14, 2006 - 03:10 PM


Usually running leaner creates a hotter than normal exhaust....

Have you been experiencing backfiring???

  • felix 222

Posted December 14, 2006 - 05:20 PM


does it sputter when acceleration or sound like it poppes when letting off the gas?

  • FFRacing79

Posted December 14, 2006 - 06:49 PM


If the packing is blown out, the outer core will get hot enough to burn the sticker. Tdub

  • 127

Posted January 04, 2007 - 10:29 AM


I'm still confussed... nope it's not backfiring and nope I'm not sputtering the bike rips... I thought about repacking but my buddy (mechanic and mmi grad) told me it would be a waste of my time b/c the pipe has like 4 hrs on it...

Dunno guys? got some new stickers from PC and I'm going riding :lol:

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