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Thread: z18xe smoking its nuts off

  
  1. #1
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    corsa-xe1's Avatar
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    z18xe smoking its nuts off

    evening all, more problems with my astra mk4!

    when its driven above 2.5k or booted at any rpm it pour's out blue smoke (oil)

    you cant see anything behind you!

    its 100% oil as it use's a few litre's aweek!

    it had a cambelt snap on the last owner and he had all the work done!

    its done 136k so its on its last leg's?

    i was thinking valve stem's but i bet its piston ring's?


    any ideas?

    thanks ash

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    lee gsi's Avatar
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    Did it just suddenly do it or has it got worse and worse?
    The truth is always the truth even if you haven't realised it yet...

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    its been getting worse over the past 4 months mate

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    Sounds like rings then.
    The truth is always the truth even if you haven't realised it yet...

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    thats what i was thinking!


    look like i am on the look out for a new engine

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    so what happens when the rings go???????

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    Oil get's in to the cylinders and burns and come's out the zorst as blue smoke.

    As oil is sprayed up the cylinder the piston rings scrape it back down but wen they fail some oil gets past the rings and gets burnt.

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    If you take the oil filler cap off does gas get blown out? Mine did when I had failed rings. Exhaust smoke was whitey grey though as the oil is burnt, blue oil is normally unburnt oil from failed valve stems.

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    no gas's come out mate, and its 100% blue smoke!

    also it smells of oil when its booted or when engine get's up to temp!

  10. #10
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    Blue is unburnt oil which to me suggests it isn't piston rings...have you had a compression test done? 136,000 miles is nothing if the engine has been serviced right, at 155,000 my 1.6 16v was almost new inside with no wear to speak of at all, I'd expect 200,000+ easily if the engine has been treated well. I'd get a compression test done - this will rule in or out issues with piston rings or valve seats.

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