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    kelena's Avatar
    kelena Posts: 3, Reputation: 1
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    #1

    Aug 22, 2006, 05:14 AM
    Briggs & stratton backfires through the carby and won't run
    My 12.5 hp B&S willnot runafter winter it is backfireing through the Carby & air filter
    thebriggsdude's Avatar
    thebriggsdude Posts: 1,096, Reputation: 53
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    #2

    Aug 22, 2006, 09:48 AM
    Have you hit anything with it? As in something got caught and stopped it dead in its tracks?

    Did you use a fuel stabilizer?
    kelena's Avatar
    kelena Posts: 3, Reputation: 1
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    #3

    Aug 23, 2006, 04:51 AM
    No I have not hit any thing hard to stop it and I have put fresh petrol in the tank
    thebriggsdude's Avatar
    thebriggsdude Posts: 1,096, Reputation: 53
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    #4

    Aug 23, 2006, 12:44 PM
    Yes but when it was setting, was it run with stabilized gas in it...

    It sounds as though you need to clean the carb...
    kelena's Avatar
    kelena Posts: 3, Reputation: 1
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    #5

    Aug 25, 2006, 05:35 AM
    OK WILL clean carby & give it a go thanks
    JACKIEALEXTN's Avatar
    JACKIEALEXTN Posts: 2, Reputation: 1
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    #6

    Nov 10, 2007, 05:11 PM
    Quote Originally Posted by kelena
    my 12.5 hp B&S willnot runafter winter it is backfireing through the Carby & air filter
    Turn crank by hand and feel for compression the intake valve is proably stuck in the open position. Free it up; and it will be ok
    Benthorn's Avatar
    Benthorn Posts: 1, Reputation: 0
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    #7

    Nov 14, 2007, 08:33 AM
    Substitute the coil and see if this won't solve the problem.
    MOWERMAN2468's Avatar
    MOWERMAN2468 Posts: 3,214, Reputation: 243
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    #8

    Nov 14, 2007, 07:16 PM
    I would suspect that the carb has water or other contaminents. Remove the carb bowl and inspect. Clean as needed. Also drain the tank and replace the fuel filter if you find anything foreign in the carb bowl.
    JOHNNY B ME's Avatar
    JOHNNY B ME Posts: 1, Reputation: 1
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    #9

    Apr 22, 2013, 01:12 PM
    I have a 17 horse briggs that's been in storage,it has a overhead valve system,it to backfifes through the carb,I cleaned carb and freash gas,hot do I check to see if the valves are stuck,thanks
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