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#595621 - 04/19/15 12:38 pm White Smoke Help  
Joined: Jan 2014
Posts: 43
Brian L Offline
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Brian L  Offline
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Joined: Jan 2014
Posts: 43
Louisiana
I have a BSA M21 that was sitting for awhile. When I started it, I had oil seeping out the top of the time cover and lots of white smoke. I recently changed the oil. Due you this is just from a wet sump. I did change the oil grade.

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#595626 - 04/19/15 1:08 pm Re: White Smoke Help [Re: Brian L]  
Joined: Aug 2001
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triton thrasher Online content
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triton thrasher  Online Content
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Joined: Aug 2001
Posts: 6,876
scotland
Sounds like oil in the crankcase, yes.


Amateur Loctite enthusiast.
#595644 - 04/19/15 3:41 pm Re: White Smoke Help [Re: triton thrasher]  
Joined: Sep 2013
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quinten Online content
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quinten  Online Content
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Posts: 1,579
Pacific northwest

The White smoke part sounds like steam ,
as the bike sat (for awhile) , its quite possible
for more than a little moisture to have condensed inside the crankcase ,
(Along with storage-wet-sumping)
As the engine heated up the water evaporated as steam
( lol) Louisiana , Does it ever get humid where the bike lives ?

.

#595713 - 04/19/15 9:53 pm Re: White Smoke Help [Re: quinten]  
Joined: Sep 2014
Posts: 455
Jeff K. Offline
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Jeff K.  Offline
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Joined: Sep 2014
Posts: 455
Michigan, USA
White smoke is water, you see this on cars all the time in cold weather. It is made a lot worst with the 10% alcohol gas that they now sell as "normal" gas.
Oil is blue and you can smell the difference.
Black is running too rich.
If the bike has sat for a while or the gas has, then it has absorbed moisture from the air.
Jeff


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