2005 crf450r. need jetting help
  • killab18
    Posts:83
    Joined:Tue Jun 03, 2008 3:55 pm
    2005 crf450r. need jetting help

    by killab18 » Sun Apr 26, 2009 7:34 pm

    hey whats up. im having a problem with the bike not being able to idle.

    mods are pro circuit exhaust and twinair filter without screen.

    i ride at 0-500ft elevation here in NY.

    i have a #42 pilot and #168 main right now. i had to turn screw out 3 turns to get it to somewhat idle and run.

    So i know i have to jump up sizing but to what?
    like a #45 and #170

    also would moving the clip down a notch help out with my jets i have now?
  • jjrace
    Posts:168
    Joined:Sat Feb 28, 2009 8:16 am

    by jjrace » Sat May 02, 2009 8:17 am

    I assume you know the basics of a carb.

    Pilot does 0-1/4, needle 1/4-3/4 and main at 3/4-WOT

    So why would you mess with the needle and main if you are having idle issues?

    3 turns out, you need to go up to at least a 45 if not a 48 pilot. Then get the fuel screw back to 1.5-2.5 turns out.
    #861
    '05 crf450r

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