01 WR426 jetting & smokes on start up at times

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  • klb130

Posted November 30, 2003 - 02:23 PM


01 wr426....grey wire cut, power now valve, FMFQ, stock head pipe, cut throttle stop and air box baffles removed. Ride SO CAL deserts mostly....any proven experience for optimum jetting?? What about a headpipe? I also cut my throttle stop a little too much and the slide moves up too high....is this a problem when WFO??

I have recently noticed on a 2-3 occasions that engine will smoke on cold start up....it is oil....The only different thing I did was change oil to synthetic...Yamalube only...but this really should'nt make a difference....Prior to this happening recently....I have never had a problem with this....valve seals???.....It starts easily and does'nt smoke under power......and the bike flat rips....

Appreciate any real life experience/advice from someone out there



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