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  1. #1

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    #2 cylinder 35% leakdown, piston rings. now what?

    So I did a leakdown test on my ski and the #2 cylinder reads 35% leakdown, compared to less than 6% on the other two while cold. The leak is the piston rings. Air comes out the other spark plug holes and the oil cap. So, I know I'll have to pull the engine but what would I have to replace assuming the cylinder wall isn't hurt? Thanks for any info on this.


  2. #2
    wotxxxsd's Avatar
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    What year, make and model ski???

  3. #3
    Matrix 4-Tec spannerspencer's Avatar
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    there are common things like rocker bolts, conrod bolts, perhaps head bolts.

    the list just goes on....

  4. #4
    shrabber's Avatar
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    When you pull the engine you will know assume ass/u/me. Common replacement parts include, all lower bearings ( i also replace thrust washers). Check bore if possible just re hone if not bore next size over(this will require new pistons and rings then cp's 8.4 will be your choice) smooth top take only what's needed to level deck.If cylinders are within specs and can be honed and pistons have no damage rering. I assuming a 4tech motor too. Top (4tech) head gasket new head bolts might as well do a valve job. If it was me prior to pulling the motor I would run a compression test on that cylinder then I would add a teaspoon of oil in that cylinder and rerun the compression change bottom (piston rings etc) no change top head valves etc

  5. #5

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    Its a 2002 gtx 4tec with 240 hours. I have verified its not the head so I'd rather not mess with it if I dont have to.

  6. #6
    mac_man_luke's Avatar
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    I hate to say it but a rebuild will cost more than the ski is worth IMO.

    Just live with it or find a replacement motor.

  7. #7

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    You don't think I could spend 300 or so and fix that cylinder? I'm sure all the TTY bolts required for pulling the head and that bottom cover would be half my cost at least.

  8. #8
    mac_man_luke's Avatar
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    If your going to bother pulling it apart your going to want to at least get the block honed and checked out.

    While the head is off you would want to make sure its flat and has good valve seal

    Then your going to want to replace all the bearings and rings.

    Plus bolts, gaskets etc

    then all you have is still a 155 N/A ski worth just the same.

  9. #9
    shrabber's Avatar
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    True part it out 300 no way your gasket kit is half that. Sell it at it state now

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