high rpm - whats wrong?

4 replies to this topic
  • gal

Posted February 08, 2003 - 11:21 AM


my friends wr400 1998 started today to rev on high rpm. its not the chock or cold start cause they r still working well and the throttle cables r fine. its not only high rpm, but the bike sounds like s__t.what could b the problem?

  • wr250rr

Posted February 08, 2003 - 12:21 PM


Possible air leak,
Check for cracks and the clamps on boot between the carb & cylinder.

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  • sabin

Posted February 08, 2003 - 12:41 PM


I have heard that the 400 has problem with the carb slide cracking...

  • rockieman

Posted February 08, 2003 - 02:50 PM


I had a similar problem on my old XR600....bike would miss at real high rpm.... stator was bad in my case.

  • gal

Posted February 09, 2003 - 12:16 PM


how can i check the carb slide?


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