Question about 2000 BMW 3 Series

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Blue smoke from exhaust

IM GETTING BLUE SMOKE RUHING FROM EXHAUST.DRINKING OIL MORE THAN USALL. SPEED IS FINE.HAD A NEW TURBO 2 YRS AGO. ANYONE CAN HELP PLEASE

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  • Mike Jan 28, 2012

    And if the leak is a turbo seal, you often SUDDENLY eat all of your oil....Watch carefully. My vote is the turbo. During heat soak (shutdown) the Turbo will get quite hot and the seals suffer....

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  • BMW Master
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Blue smoke is a sign that oil is being burnt in the combustion process. It is normally a sign of high engine mileage. Definately a compression test would be in order to try to pinpoint the cause. In addition to high mileage it could be something like a broken piston ring or a valve not seating properly. It might also be possible that you turbo has a bad seal and is putting oil into the air as it spins. This problem should definately be looked into soon. Hope this helps.

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  • hb5fa Feb 11, 2011

    I had a similar situation to my 06 Toyota Matrix. It happened when the car was only 63k and 3 months over the 5/60 warranty. The car burnt a lot of oil and spilled a ton of blue smoke especially during cold start. The dealer said I had a sludge engine and quoted me for a $6300 engine replacement estimate. Disbelieved, I seeked 2nd and 3rd opinions and they all said that the sludge in the engine had caused valve seals and piston rings to malfunction. I further did very extensive search on google and youtube. I saw many other car owners had similar experiences. Some did say that it was a faulty PCV problem. With nothing to lose, I bought a $20 repair manual and replaced a $8 dollar PCV and the blue smoke stopped immediately! I further research of sludge problems. Did engine flushes twice and changed oil 4 times in a month until oil was clear. Finally, I replaced all my spark plugs and I got my 35 mpg back and the car ran like new.

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===
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