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    gtaylor205's Avatar
    gtaylor205 Posts: 1, Reputation: 1
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    #1

    May 22, 2011, 10:03 AM
    Briggs-stratton 12.5?
    What does it mean when it start smoking heavy out of muffer
    DG's Avatar
    DG Posts: 1,375, Reputation: 109
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    #2

    May 22, 2011, 12:10 PM

    Check oil level.
    Make sure its not over full'
    Gas could be getting in your oil through carb , valves .
    If oil level okay could be piston rings , or could be head gasket.
    Luck
    SC2012's Avatar
    SC2012 Posts: 3, Reputation: -1
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    #3

    Apr 1, 2012, 09:05 AM
    All of what DG stated. Only thing I would add is that the crank case breather my be stopped up or you could be using the wrong oil. You are supposed to use 30 weight non-detergent oil.

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