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White Smoke Help #595621
04/19/15 12:38 pm
04/19/15 12:38 pm
Joined: Jan 2014
Posts: 43
Louisiana
B
Brian L Offline OP
BritBike Forum member
Brian L  Offline OP
BritBike Forum member
B
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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Re: White Smoke Help [Re: Brian L] #595626
04/19/15 1:08 pm
04/19/15 1:08 pm
Joined: Aug 2001
Posts: 7,302
scotland
triton thrasher Offline
BritBike Forum member
triton thrasher  Offline
BritBike Forum member
Joined: Aug 2001
Posts: 7,302
scotland
Sounds like oil in the crankcase, yes.


Amateur Loctite enthusiast.
Re: White Smoke Help [Re: triton thrasher] #595644
04/19/15 3:41 pm
04/19/15 3:41 pm
Joined: Sep 2013
Posts: 1,664
Pacific northwest
Q
quinten Offline
BritBike Forum member
quinten  Offline
BritBike Forum member
Q
Joined: Sep 2013
Posts: 1,664
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 ?

.

Re: White Smoke Help [Re: quinten] #595713
04/19/15 9:53 pm
04/19/15 9:53 pm
Joined: Sep 2014
Posts: 455
Michigan, USA
J
Jeff K. Offline
BritBike Forum member
Jeff K.  Offline
BritBike Forum member
J
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


Moderated by  Allan Gill, Jon W. Whitley 


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