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    bobsim's Avatar
    bobsim Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Jun 19, 2010, 12:46 PM
    Briggs and stratton 12.5 hp
    Have a 12.5 b&s motor in rider replac float/set needle in carb new filter also gas backs up into air filter and when I open gas shut off valve also leaking out of exhaust port/ any ideas what is going on? / Grass is getting longer
    crigby's Avatar
    crigby Posts: 4,343, Reputation: 107
    Outdoor Power Equipment Expert
    		  
    #2

    Jun 21, 2010, 08:31 AM

    Hi,
    Still some trash in carb or a compomised float, At any rate the inlet needle is not sealing the fuel inlet and causing this. You probably have the oil in the sump contaminated as well.
    Peace,
    Clarke
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