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Crankcase blowby

Discussion in 'XJ Technical Chat' started by Scabby, Jul 15, 2010.

  1. Scabby

    Scabby New Member

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    :D I have a 1981 Maxum and I am using air pods instead of the original air box. I have noticed that after a 2 or 3 mile ride that a good deal of smoke is coming out of the crankcase breather. I have a K&N filter on the breather. I notice it when I am idling. Oh and it's about 110 in the shade here where I live.
    Is this normal or is it a sign that my rings are going bad?
     
    Scabby, Jul 15, 2010
    #1
  2. snowwy66

    snowwy66 Member

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    you wouldn't have blowby if the rings were good.

    i have the same dillema
     
    snowwy66, Jul 15, 2010
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  3. bigfitz52

    bigfitz52 Well-Known Member Premium Member

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    Do a compression test to determine the state of your rings.

    Some crankase ventilation output IS normal.

    How much "output" is considered normal is hard to say, since on a bike with the airbox still on it you'll never see it.
     
    bigfitz52, Jul 17, 2010
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