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  1. #1

    2003 1200 XLT Middle cylinder=POOF!!!!

    Well couple questions on here as I am baffled. I had #3 cylinder burn up last year because the oil delete had not been done. So...did that and rebuilt and ran great from then on. Winterized it...fogged cylinders and treated 1/2 tank of gas remaining with stabil over winter.

    Took the ski out for first time,...ran great.Filled up rest of tank with fresh gas..non ethanol. ran great in the beginning but died twice on me just randomly.restarted it and fired right back up. Never ran it hard, only died 2 times within 5 min and then ran fine rest of the ride for 30 min or so. Fast forward couple weeks and took out again. Fired up and ran great for 40 min and then died again. Fired up and ran it for another 5 min and then it poofed and I knew this time what it was exactly.

    Please help a newb like myself figure out what would have caused this to lean out cylinder#2. I am thinking dirty carbs from sitting over winter but not sure 100%. Havent taken them apart yet as I havent had time,...going to take it apart here this weekend when i get time. Just wondering if someone on here could possibly help me diagnose what would cause this. I dont want to rebuild this without knowing what the cause is and then have it happen again.


  2. #2
    powerstroke specialist mikegp's Avatar
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    what exactly happen? bad crank , pv broke, just lean and seize?
    you need to properly determine what fail in order to address the cause of the problem. carbs are always a problem, until you reject them and remove the accelerator pump. once thats done, problems are over.
    for example if the fuel pump in carb#2 fails or gets dirty , it will make that cylinder lean and it will fail.
    using the right jetting specs and drilling the return on all three carbs , removing the accelerator pump, will take care lots of future problems.

  3. #3
    Piston melted down on exhaust port side and siezed...Melted spot about the width of a thumbnail and as deep as the second piston ring.

  4. #4
    powerstroke specialist mikegp's Avatar
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    Quote Originally Posted by craazzycanuk View Post
    Piston melted down on exhaust port side and siezed...Melted spot about the width of a thumbnail and as deep as the second piston ring.
    if your pv is intact, and the crank looks good ,no heavy metal on the cases ,and new parts are installed, before you even think to start the engine go over the carbs and do all of the mods available. you won't be even needing the choke anymore.

  5. #5
    Thanks mikegp....this is my father inlaws ski and he is wanting to fix and get it running with as little as possible invested. Then he is gonna sell it. So with that being said I would love to do those mods...needles/ FA's and rejet, but he doesnt wanna deal with the 2 stroke anymore. I love em and will do the work to fix, but this has got me puzzled as to what it could be that caused it.

    PV is intact and all looks good. Crank and rod dont look like they have been heated up really hot and discolored so they will be fine.

  6. #6
    powerstroke specialist mikegp's Avatar
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    then just do oem carbs kits, that should take care the problem, but go through the whole carb including the fuel pump side, and make sure the accelerator pump inst block.

  7. #7
    Thanks. Will do that and report back that hopefully that was the problem (fingers crossed)

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