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  1. #1
    Join Date
    Aug 2018
    Location
    Illinois
    Posts
    1

    Default Johnson 9.9 dieing at full throttle

    Hello, I am new to this forum but I have read a lot of threads. I have a 1986 Johnson 9.9 with a 15 hp kit. I put a new carb kit and cleaned the carb. The motor is still very hard to start but after it runs it starts easy the whole time after. It will not run a full throttle but idles perfect. I can pull the chick and it will keep it from dieing but it blubbers and runs bad for a min after. I donít know what there is left to do, I have adjusted the air fuel ratio new spark plugs new fuel lines. Iím at a loss. Any help would be appreciated.

  2. #2
    Join Date
    Apr 2016
    Location
    barnegat NJ
    Posts
    3,143

    Default Re: Johnson 9.9 dieing at full throttle

    Try pumping the primer bulb while she's running,this would compensate for a fuel restriction or weak fuel pump

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