//ArrowChat Code
Results 1 to 5 of 5

Thread: 250sx help

  1. 09-28-2017, 07:00 PM #1
    Atc 123
    Atc 123 is offline New to the board Arm chair racerNew to the board
    Join Date
    Feb 2017
    Location
    Ky
    --
    43

    250sx help

    I just finished a rebuild of the top half of the motor i went to start it wouldn't so i checked every thing noticed when i kicked it over air comes back through the air box or where it sounds like its comeing from so help any ideas
    Reply With Quote Reply With Quote
  2. 09-28-2017, 07:08 PM #2
    125Mmadness's Avatar
    125Mmadness
    125Mmadness is offline At The Back Of The Pack Arm chair racerFirst time rider
    Join Date
    Apr 2017
    Location
    McConnelsville,Oh
    --
    157
    If its coming out during the compression stroke then your valves aren't seating and you need to lap them.
    1985 ATC125M: Parts
    1985 ATC200S: 84 200S Bottem end, 200x Head, 200x Carb, S&S Cycle Exhaust, Wiseco 10.25:1 Piston, Reground Cam with About 1mm more lift(unknown specs).
    1988 TRX250X
    1983 ATC200E: Total Pile.


    "Bout Tree Fiddy" Master of Thy 22RE
    Reply With Quote Reply With Quote
  3. 09-28-2017, 07:10 PM #3
    fabiodriven's Avatar
    fabiodriven
    fabiodriven is offline Aspiring romance novel cover model, and the Official 3WW slayer of thieves and swindlers. Catch me if you can
    Join Date
    Jun 2008
    Location
    The woods
    --
    10,515
    You don't necessarily need to lap your valves. You would adjust the valves first and go from there. Are you sure you timed the valves correctly?
    85 Tri-Zinger 60
    85 ATC250SX
    86 ATC250SX
    87 ATC250SX
    02 XR650L conversion
    84 ATC 480R
    Reply With Quote Reply With Quote
  4. 09-28-2017, 07:26 PM #4
    shortline10's Avatar
    shortline10
    shortline10 is offline Power User The day begins with 3WW
    Join Date
    Jul 2009
    Location
    South Florida
    --
    6,726
    Timing is off , cam lobes pointed down with the top cam sprocket bolt at 12 o'clock , piston top dead center and flywheel mark set on T
    Last edited by shortline10; 09-28-2017 at 07:38 PM.
    78 atc 90/180cc Dickson Full Suspension
    76 ATC90/180cc Nicholson
    77 atc 90 Dickson Full Suspension
    84 KLT 110/123cc Powroll Racer from 80s
    87 atc 125m stock
    84 atc 200x Curtis Sparks
    84 atc 200x Powroll My race bike from 80's
    83 atc70/108cc Powroll blue Xmas Special
    81 atc185s HP-ATC full suspension

    Performance Shop is Open PM me for Service

    My Feedback http://www.3wheelerworld.com/showthr...ck+shortline10
    Reply With Quote Reply With Quote
  5. 09-30-2017, 01:05 PM #5
    Atc 123
    Atc 123 is offline New to the board Arm chair racerNew to the board
    Join Date
    Feb 2017
    Location
    Ky
    --
    43
    Ok thanks guys timeing was off but another problem occured i used the kick starter and it went all the way down then came all the way back up and hit the tire did it slide off the gear cuz the spring still winds up?
    Reply With Quote Reply With Quote
//ArrowChat Integreation Code //