99 400 Jetting? The link above doesn't work


4 replies to this topic
  • kx4life13

Posted June 15, 2014 - 07:31 PM

#1

Soo I ride in southern Utah and knolls and the pilot jetting isn't working right how I have it so what are recommended jettings

  • grayracer513

Posted June 16, 2014 - 06:11 AM

#2

http://www.thumperta...tting-database/



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  • kx4life13

Posted June 16, 2014 - 06:55 AM

#3

Thanks!

  • rdefonce

Posted June 27, 2014 - 05:09 PM

#4

Soo I ride in southern Utah and knolls and the pilot jetting isn't working right how I have it so what are recommended jettings

On my '99, what helped was a richer pilot jet - the stock 45 is just too lean for many conditions (and I'm surprised that in the Grays, link no one was using a richer pilot jet)

I believe I installed a 50, which helped a lot.



  • kx4life13

Posted June 29, 2014 - 05:06 PM

#5

Well right now I'm running all stock except the pilot and it's a 42 and it's still running like crap in low throttle and too hot everywhere else





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