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    cmon4day's Avatar
    cmon4day Posts: 2, Reputation: 1
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    #1

    May 19, 2008, 03:12 PM
    Briggs & Stratton 16HP Vanguard Motor
    Hi,

    I have a B & S 16Hp Vanguard motor that runs hydraulic tools. The motor was smoking and running rough so I replaced the oil, gas, and air filter. I started it up with out the oil filter on and the motor runs perfect. I reinstall the air filter and the motor begins to choke out and run rough. I take the air filter off and it runs fine again. What could be the cause of this? Anybody?? :confused:
    Stratmando's Avatar
    Stratmando Posts: 11,188, Reputation: 508
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    #2

    May 19, 2008, 03:41 PM
    Carburetor sounds like it is running rich(more fuel than needed), without filter you have more air, sounds like if you lean the carburetor(less fuel), it will be a good mix with less air?
    cmon4day's Avatar
    cmon4day Posts: 2, Reputation: 1
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    #3

    May 20, 2008, 01:06 PM
    Quote Originally Posted by cmon4day
    Hi,

    I have a B & S 16Hp Vanguard motor that runs hydraulic tools. The motor was smoking and running rough so I replaced the oil, gas, and air filter. I started it up with out the oil filter on and the motor runs perfect. I reinstall the air filter and the motor begins to choke out and run rough. I take the air filter off and it runs fine again. What could be the cause of this? Anybody????:confused:
    Thanks for your reply. The problem ended up being a oil soaked air filter. Upon first look at the filter it looked clean. Put a new one on and problem solved.
    Stratmando's Avatar
    Stratmando Posts: 11,188, Reputation: 508
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    #4

    May 20, 2008, 03:52 PM
    With the restriction of air, gave you more fuel, a rich condition, the new filter allowed more air(leaned the fuel)
    MOWERMAN2468's Avatar
    MOWERMAN2468 Posts: 3,214, Reputation: 243
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    #5

    May 20, 2008, 06:42 PM
    Your carb needs either cleaned or adjusted, both probably would not hurt being performed.

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