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Thread: HELP! 400ex motor

  1. #1
    Join Date
    Jun 2003
    Location
    cincinnati ohio
    Posts
    1,087

    HELP! 400ex motor

    well my 400ex motor started smoking and vibrates at the hight rpms i checked my motor mounts and frame and all that for cracks and breaks nothing my jetting is spot on and my plug is black frome the smoking

    any insite before i take it apart?


    thanks

  2. #2
    Join Date
    May 2003
    Location
    pendleton, ny
    Posts
    2,080
    when does it smoke and what color. how many hours/how old is it. we need more info.
    2003 4??EX w/: too much stuff to list. im afraid to total the receipts.
    2001 AC ZR600 vev efi le ITS FORSALE
    1995 Chevy S-10 LS 4.3 5speed 6/7 drop with some custom stuff....lowest static in town....

  3. #3
    Join Date
    Jun 2003
    Location
    cincinnati ohio
    Posts
    1,087
    it smokes when you get on it some or start going threw the gears were ever their is a load on it and it vibrates in just higher that mid range untill you shift gears then it will go away and its blueish whitish smoke

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