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  1. #1
    Join Date
    Oct 2007
    Location
    clearwater, fl, usa
    Posts
    43

    Default "hi and thanks in advance my

    "hi and thanks in advance
    my 8hp yamaha will start and run but then it will stall.
    i pump the ball back up and it will do the same
    i cleaned the carb twice just to make sure it wasnt that.
    installed new diaphrams in the fuel pump changed the plugs and the fuel filter, but it seems like when the fuel is used up in the float bowl it dies.
    i suspect a primary compression issue could i be right ?
    does anyone have any ideas ?
    yes the vent is open on the gas tank"

  2. #2
    Join Date
    Apr 2009
    Location
    Greenville, South Carolina, USA
    Posts
    131

    Default "Maybe the carb float needle v

    "Maybe the carb float needle valve is sticking. remove carb drain plug, fill fuel filter with carb cleaner, pump that with the bulb through the carb, hold rag under drain hole to see what comes out. You can also spray carb cleaner into drain hole to further flush/clean. Good luck!"

  3. #3
    Join Date
    May 2009
    Location
    punta gorda, florida, usa
    Posts
    32

    Default "sounds like you need to clean

    "sounds like you need to clean the carb a wee bit better, its easy to miss a few bits and pcs, also get a blow up of the carb to make sure you didnt miss a jet or too, also when cleaning the jets make sure to run a fine wire thru the jets, sometimes carb cleaner and comp air just dont get it exp if it sat with bad gas in it for a few months"

  4. #4
    Join Date
    Sep 2006
    Location
    SF BAY AREA, CALI, USA
    Posts
    8,649

    Default "if primer bulb is soft, you h

    "if primer bulb is soft, you have an air leak"
    HUMAN BUILT = HUMAN FIXED

    CERTIFIED MARINE TECHNICIAN

    WWW.JUSTINTIMEMARINE.COM

  5. #5
    Join Date
    May 2009
    Location
    Baltimore, MD, United States
    Posts
    8

    Default "I recently ran across a motor

    "I recently ran across a motor that the fuel connector had pulled out of the engine. It had been put back in , but the engine would start and run for a few Min. then die. Removed the barrel of the connector ans put sealant on it and reinstalled. Problem went away?"

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