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    simmonsb4300's Avatar
    simmonsb4300 Posts: 1, Reputation: 1
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    #1

    Mar 30, 2010, 06:17 PM
    Why is my briggs and stratton 11hp riding mower blowing gas out the oil check?
    I got my lawn mower out this week and started it one time and it started smoking. I went to check the oil and it was full of gas and gas also spit out the exhaust.
    KISS's Avatar
    KISS Posts: 12,510, Reputation: 839
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    #2

    Mar 30, 2010, 08:23 PM

    The OIL BREATHER needs to be replaced. Usually a funky thing mounted in the crankcase with a tube going nowhere. Depends on engine.
    DG's Avatar
    DG Posts: 1,375, Reputation: 109
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    #3

    Mar 31, 2010, 06:09 AM

    Something else you might check for is dirt and debri in bottom of carb,gets under inlet needle gas will go through the intake valve and fill the engine block,Don't run with this in it.could be bad.
    Luck
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