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Thread: top end help

  1. #1
    Join Date
    Jul 2004
    Posts
    530

    top end help

    my motor went out the other day and i went through hoops and found out the problem.. well atleast i think its the problem...

    on the left side of the motor (400ex) theres 2 hex bolts that are the rocker arm shafts.. one of them was unscrewed and sticking out about 4 cm from the side of the motor... i have yet to ever look in my motor before.. so do you guys have any idea what could have caused this or what could be wrong with my motor? sorry for the bland post but i believe this is my problem but now i have no clue what to do.....


    BTW its a 400ex

    thanks for any help guys
    {CAATV #9}YZ426 HyBrId
    lonestar,TC racing, Hetrick Racing,PEP,Laegers,works,Burgard, Ac racing, Maier, Middle of Nowhere Productions

  2. #2
    Join Date
    Jul 2004
    Posts
    530
    update:

    i took off the head yesturday and i found nothing to be out of place or wrong at all? the cam chain cam and rockers all moved freely and every thing was ok.... where should i go next?
    {CAATV #9}YZ426 HyBrId
    lonestar,TC racing, Hetrick Racing,PEP,Laegers,works,Burgard, Ac racing, Maier, Middle of Nowhere Productions

  3. #3
    Join Date
    Jan 2005
    Location
    williamsburg ohio
    Posts
    166
    when you say your motor went out what exactly happend
    400 ex 2005
    powermadds
    ac pro peg nerf bars w/heel kicks
    k&n air filter w/outerwear and outwear airbox lid cover
    big gun rev box
    jetted carb
    four riding gear
    ac full skid
    ac swing arm skid
    omf air scoops
    ims bumper


    IF YOUR NOT RIDIN RED,YOUR PROBABLY PUSHING polaris

  4. #4
    Join Date
    Jul 2004
    Posts
    530
    i was riding in about 1/2 throttle 4th gear.. then it just turned off.. just like it ran out of gas or something..

    but i checked everything like..
    gas
    petcock was turned on
    re-wired kill switch
    cleaned carb
    opened up head found no problems with the cam cam chain or rockers

    now i dont know what to do next
    {CAATV #9}YZ426 HyBrId
    lonestar,TC racing, Hetrick Racing,PEP,Laegers,works,Burgard, Ac racing, Maier, Middle of Nowhere Productions

  5. #5
    Join Date
    Jan 2005
    Location
    williamsburg ohio
    Posts
    166
    when you hit the start button does it or did it turn over freely
    400 ex 2005
    powermadds
    ac pro peg nerf bars w/heel kicks
    k&n air filter w/outerwear and outwear airbox lid cover
    big gun rev box
    jetted carb
    four riding gear
    ac full skid
    ac swing arm skid
    omf air scoops
    ims bumper


    IF YOUR NOT RIDIN RED,YOUR PROBABLY PUSHING polaris

  6. #6
    Join Date
    Sep 2004
    Location
    Claremont, NH
    Posts
    563
    the cam sprocket turns the camshaft correct?
    02' Silver 440ex
    Full P&P, Edelbrock Doug Eichner 440 carb, Motoworks SR4, Hotcams, Wiseco 11:1, Hotrods...

  7. #7
    Join Date
    Jul 2004
    Posts
    530
    i also went and got a new spark plug and the old one was a dark dark brown color with alot of build up on it..but nothing happened with the new one... and yes it turns over completely fine.. and the cam and rockers and cam chain all work fine... so where do i go now?
    {CAATV #9}YZ426 HyBrId
    lonestar,TC racing, Hetrick Racing,PEP,Laegers,works,Burgard, Ac racing, Maier, Middle of Nowhere Productions

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