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BMW E39 5 Series 1997-2003 (525i, 528i, 540i, M5, sport wagon) exhaust smoke at start up


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Last Post: Jun 28, 2018 6:24 AM Last Post By: smitha
retiredbimmer

Posts: 1
Registered: 12/02/16
exhaust smoke at start up
Posted: Dec 2, 2016 11:00 AM
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My 2002 525i (127,500 miles) recently started emitting blue exhaust smoke on start up only. Noticing a small oil leak from the engine. I would like to know likely scenario's so the local mechanic just doesn't start swapping parts.

Thanks for insights.
Hasso

Posts: 503
Registered: 12/09/03
Re: exhaust smoke at start up
Posted: Dec 17, 2016 2:44 PM   in response to: retiredbimmer in response to: retiredbimmer
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Most common is the crankhouseventilation is stocked or the returnpipe from the ventilation in the oillevelpipe is full of dirt.
Alison Daewon

Posts: 2
Registered: 11/28/17
Re: exhaust smoke at start up
Posted: Nov 28, 2017 7:57 AM   in response to: retiredbimmer in response to: retiredbimmer
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A compression test won't show any problems with pipe stem seals, as the valves are connected during compression. If it's blue smoke it can only be down to heating oil. Our experience in Help In Essays service with expert authors from the USA We help all the clients who come to us get help in essays.
smitha

Posts: 1
Registered: 06/28/18
Re: exhaust smoke at start up
Posted: Jun 28, 2018 6:24 AM   in response to: Alison Daewon in response to: Alison Daewon
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