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Thread: slight pop/backfire on decell

  1. #1
    Join Date
    Jan 2005
    Posts
    8

    slight pop/backfire on decell

    I picked up a 2004 honda 250ex . It has the older dg performance Xcellerator slip on pipe,uni air filter,no air box lid everything else is stock. When I got it ..it was running poorly. I installed a Dynojet 112 main and 42 honda pilot in the carb,new plug and air filter. After resetting the fuel mixture and idle set to factory specs here is what I have now. There is a slight pop on decelleration from full throttle and i have the fuel/air set to 3.5 turns out and the idle set perfectly. It idles nice and has great acceleration on throttle. But being anal on how all my quads run I was wondering what you guys would suggest to eliminate the last little pop on decell???

  2. #2
    Join Date
    Dec 2003
    Location
    pioche,nv
    Posts
    1,391
    backfire on decell is a lean condition.
    RECREATION TIRES
    www.rectires.com

  3. #3
    Join Date
    Jan 2006
    Location
    KANSAS
    Posts
    2,846
    exhaust leak probably at head, get new crush gasket
    2006 trx450r
    2006 yfz450
    2008 400ex
    1999 400ex
    2008 250ex
    2011 rzr S

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