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  1. #1

    Default 89 Mariner 2 stroke 15hp carb spitting gas

    Upon priming and trying to start, fuel spits out of a notch cut into the top right side of the carb. It is enough to drip a large amount down through the engine body and I am scared to run it with this. It looks like the notch was machined in the carb, it has a gasket on it held by 2 screws. What could be causing this and how can I fix it? Please help!

  2. #2
    Join Date
    Aug 2006
    Location
    SW Ohio, USA
    Posts
    10,180

    Default Re: 89 Mariner 2 stroke 15hp carb spitting gas


  3. #3

    Default Re: 89 Mariner 2 stroke 15hp carb spitting gas

    Yes. That notch you see in 15/16 is where it is coming out of. Is this some kind of a bypass/overflow? The motor will not start and there is so much fuel it may not be getting to the combustion chamber.

  4. #4
    Join Date
    Aug 2006
    Location
    SW Ohio, USA
    Posts
    10,180

    Default Re: 89 Mariner 2 stroke 15hp carb spitting gas

    Don't know. Looks like you need #15 the gasket/diaphragm kit. The diaphragm is probably torn after 22 years. That parts diagram was selected at random so select your engine by serial number for the correct parts from below.

    http://www.mercruiserparts.com/selec...asp?doc_nbr=15

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