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gs750 oil in exhaust port

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    gs750 oil in exhaust port

    Hello.I've just noticed that my #3 cylinder has oil in the exhaust port. I am currently establishing gs750's baseline as per the Mega Welcome/30000km service. I was wondering if oil in the exhaust port is due to rings needing replacing? Please see photo.Thanks.Mike.
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    #2
    I would guess the valve seal need replacing
    Jordan

    1977 Suzuki GS750 (My first bike)
    2000 Kawasaki ZRX1100
    1973 BMW R75/5

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      #3
      Or the rings are stuck, especially if it's just one cylinder. Compression test?
      '82 GS450T

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        #4
        Had this recently on our z1000 race bike it was the oil seal the one below the piston rings, came a drift after replacing the rings

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