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Stuck piston rings

  • 23-05-2021 12:40pm
    #1
    Registered Users Posts: 92 ✭✭ kja1888


    Is there anything like Seafoam available here to unstick Rings on a running engine?


Comments

  • Registered Users Posts: 34,398 ✭✭✭✭ Dan Jaman


    kja1888 wrote: »
    Is there anything like Seafoam available here to unstick Rings on a running engine?


    Take the plugs out, mix up 50% acetone and 50% ATF, dose each cylinder with a few mls, and leave sitting for a few days.
    Start it up, take it for a run and see if it's improved.
    Repeat as necessary.
    I've done this with a few long-abandoned engines and it's worked well, where the problem has actually been sticky rings.
    There used to be a product called Yamaha Ring-Free, which was sold via marine outlets, but I've not seen it for years.

    <edit to add>
    If you can't find acetone, some gunwash, or cellulose paint thinners will do the job.
    Last bike engine I stripped I left the old manky pistons with their solidly stuck rings sitting in a tin of the mix for a couple of months while I got on with other stuff. When I fished them out the gunge that was sticking the rings had just fallen away. So, it might not work overnight, but it does eventually work depending on the severity of the gunge.
    Вашему собственному бычьему дерьму нельзя верить - V Putin
    




  • Registered Users Posts: 2,660 ✭✭✭ 9935452


    Dan Jaman wrote: »
    Take the plugs out, mix up 50% acetone and 50% ATF, dose each cylinder with a few mls, and leave sitting for a few days.
    Start it up, take it for a run and see if it's improved.
    Repeat as necessary.
    I've done this with a few long-abandoned engines and it's worked well, where the problem has actually been sticky rings.
    There used to be a product called Yamaha Ring-Free, which was sold via marine outlets, but I've not seen it for years.

    Available from the states but postage is expensive

    https://www.ebay.com/itm/282671907511


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