04 yz450f

3 replies to this topic
  • Jharriet

Posted October 24, 2013 - 06:31 PM


I looked at buying a 04 yz450f today. The bike is in decent shape overall but is backfireing consistantly, the owner claims it needs a carb cleaning and a new hot start cable installed. Would the plunger on the hot start cable cause the bike to run crappy and not idle? For 1000$ it seems to goo to pass up.

  • markbradley

Posted October 24, 2013 - 06:36 PM


Might be valves too... My CRF 250R did that when the valves went out of spec

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  • grayracer513

Posted October 24, 2013 - 06:43 PM


Yes. it could.  If the hot start plunger is missing, the bike has a fairly large air leak, and would be very lean. 

  • rangerclass7sx

Posted October 26, 2013 - 04:11 PM


i had a 04 got it brand new from the dealer and after a while it started popping big time on deceleration, turned the fuel mixture screw thats on the bottom of the carb and ran perfect

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