popping on deceleration?????? Lean?????



2 replies to this topic
  • 450yjoffroad94

Posted March 18, 2003 - 11:23 PM

#1

I have a 03 wr450 and big gun system with 160 main and 48 pilot at 744 feet Need help.... :)

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  • HighPlainsWR

Posted March 19, 2003 - 04:06 AM

#2

It's your pilot jet. Either richen up via the adjustment screw or go to a higher pilot jet, a 50 or 52. I'm at 6K feet and the 48 was too lean for me once the bike was uncorked. The adjustment is in the manual. I'd quote the page but there is 3 feet of snow out and I don't want to wade out to the barn.

  • David_Gronlund

Posted March 19, 2003 - 04:22 AM

#3

I had the same problem until I went with a YZF450 needle then it stopped. It also runs a lot better on bottom and in the mid range.




 
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