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2017 Mercury 115 4 stroke problem

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  • 2017 Mercury 115 4 stroke problem

    Have a 2017 Mercury 4 stroke, after running for a few hours it starts to surge rpm and engine jumps. I have attached a couple videos: https://youtu.be/J44cdmcpwck, https://youtu.be/IYJAKuZGQNU Dealer has replaced fuel demand valve and vst assembly.
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