426 dies when choke i pushed in


5 replies to this topic
  • 99tonkatruck

Posted May 01, 2009 - 07:32 PM

#1

Hi all first post here, I have searched for the past 2 hours and cant find the answer please help. I have a 2001 yz426f and normal cold start up with choke out. It starts first or second kick no prob. After letting it warm up a bit i push choke back in and bike dies. Do this 2 or three more times, same result. I then rode around easy for 5 minutes with choke pulled out, bike now good and warm, push choke in and bike dies, i dont get it. I have messed with idle bringing it up and down, bike still dies.

  • rickallen124

Posted May 01, 2009 - 07:45 PM

#2

Your pilot jet is probably plugged.

  • 426 NOOB

Posted May 02, 2009 - 01:01 AM

#3

Hi all first post here, I have searched for the past 2 hours and cant find the answer please help. I have a 2001 yz426f and normal cold start up with choke out. It starts first or second kick no prob. After letting it warm up a bit i push choke back in and bike dies. Do this 2 or three more times, same result. I then rode around easy for 5 minutes with choke pulled out, bike now good and warm, push choke in and bike dies, i dont get it. I have messed with idle bringing it up and down, bike still dies.


pilot jet for sure

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  • 642MX

Posted May 02, 2009 - 06:11 AM

#4

These guys are right, pilot circuit.

  • desert-rat660

Posted May 02, 2009 - 03:06 PM

#5

mixture screw could have fallen out.

  • 99tonkatruck

Posted May 02, 2009 - 05:28 PM

#6

Thanks guys i pulled the carb off and cleaned it very well, the bike runs great now.





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