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Help, 14 hp Briggs Vanguard carb flooding!

Discussion in 'Mechanic and Repair' started by mike90lx, Sep 21, 2009.

  1. mike90lx

    mike90lx LawnSite Member
    Posts: 4

    I have 14 HP Briggs Vanguard Model series 261700, (manufactured 1990) that the carb keeps flooding when the mower sits unused for a few hours. Once the engine starts the engine runs fine. I replaced the needle valve and also cleaned the needle seat with carb cleaner and a cotton swab, the brass needle seat is not removable and seems clean. I checked the float for any leaks, but it did not find any. When the float is pushed up the needle valve seems to be sealing, as I cannot blow air through the carb fuel pipe with my mouth. Any suggestions on what else could cause this would be appreciated. Thanks.
  2. Restrorob

    Restrorob LawnSite Fanatic
    Posts: 11,023

    If you post a correct model and type number maybe someone can lend a hand.....
  3. mike90lx

    mike90lx LawnSite Member
    Posts: 4

  4. Restrorob

    Restrorob LawnSite Fanatic
    Posts: 11,023

  5. pugs

    pugs LawnSite Gold Member
    Posts: 3,022

    Shut the fuel off when not in use(like Restrorob said) or put a new carb on it.
  6. cbegap

    cbegap LawnSite Member
    Posts: 141

    I have had 2 Kohlers and 2 Briggs that seem to have this problem. Sometimes they don't have any problems, then bam, forced oil change. Being gravity fed fuel systems, I second installing a fuel shut off valve even if you think you fix the problem.

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