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Yamaha 9.9 2 stroke outboard starting issue

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  • Yamaha 9.9 2 stroke outboard starting issue

    So i have a yamaha 9.9 2 stroke. Ran great last season. This spring it wouldnt start. I replaced both spark plugs. Pulled the rope. Started right away , ran 3 seconds , shut off , oil covered plugs.
    any ideas ?
    I will be rebuilding carb and fuel pump now. I dont think its a fuel issue.

  • #2
    We still need a model # and YEAR of the engine..

    It would be easier for all to keep your info on ONE THREAD too..


    You mentioned on your other thread missing a choke linkage. Has that been figured out?
    Last edited by TownsendsFJR1300; 08-23-2019, 07:43 AM.
    Scott
    1997 Angler 204, Center Console powered by a 2006 Yamaha F150TXR

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    • #3
      it it oil fouled plugs in 3 seconds, you would have to be putting too much oil into it

      and no one knows what 9.9 this motor is still

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