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zl 1000 oil coming out of exhaust

zl 1000 Apr 3, 2019

  1. zl 1000

    zl 1000 Member

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    zl 1000 oil coming out of exhaust . Is there a com problem for this .?
     
  2. 87kawzl

    87kawzl Supporting Member

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    Overfull crankcase?

    Dripping or smoke?
     
  3. wuputt

    wuputt ZL-OA Co-owner Staff Member Administrator Super Moderator Technical Author Supporting Member

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    I have never heard of this problem! Definitly want to check the oil level, make sure theres no gas or coolant in it. Is it smoking the blues? Are you sure its not dirty condensation?

    Let us know what you find!
     
  4. Jukka Hakala

    Jukka Hakala New Member

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    My exhaust smoke is getting blueish when I accelerate heavily. My friend said it might be because valve gaskets are leaking? Might this be the case? Also plugs are guite black. Any similar kind of experiences anyone?
     
  5. Harriminator

    Harriminator Senior Member

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    Blue smoke = engine burns oil; suggest a step-by-step check list like this:

    1. oil level check
    2. compression test to check piston rings
    3. head gasket check (water in oil or coolant black colored?)
    4. valve stem seals to be replaced

    Keep us informed :thumbsup:
     
  6. R. J.

    R. J. Supporting Member

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    :hello: Have someone ride closely behind you slowly then speed up. Do this several times & have them smell for burning oil.
     
  7. paulfun

    paulfun "King Of The 1/4mi (Internally Stock)"

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    Broken or stuck ring is most likely to cause enough oil to get in that it can get out the exhaust without burning.

    Excessive valve guide wear in most cases will cause oil burning but not actual oil coming out the exhaust unless the crank case vents are blocked or capped for some reason
     
  8. Ed

    Ed Active Member

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    In general:
    Smokes when throttle closed = leaky valve seals
    Smokes when throttle not closed = leaky rings
     
  9. Trojan441

    Trojan441 Well-Known Member

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    This problem should be sorted quickly, what mileage has your machine done? If a piston ring breaks could b a rebore job, new rings or more expesively new pistons! Blue smoke is I think we are all agreed burning oil. Replacing valve guides may be a specialist job too. Best scenario maybe is gummed up piston rings stuck up or worn rings exhibiting a fluttering motion n' letting oil blow by past them!
     
  10. Ed

    Ed Active Member

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    If it's liquid oil coming out, it's probably a bad head gasket.
     
  11. 87kawzl

    87kawzl Supporting Member

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    You sure the water pump isn't going bad and leaking oil onto the exhaust? That is a common occurrence as these bikes age.
     

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