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    Mercury MAG 350 MPI Horizon loss of HP

    If the culprit is fuel pressure, I can isolate downstream of the fuel pump with a external jerry can, would the high pressure pump that would suggest those symptoms and would it throw an code?
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    Mercury MAG 350 MPI Horizon loss of HP

    @Fun Times I will look into renting the Rinda! thanks. @alldodge Maybe my pressure is low, my "clymer" spec was 35psi but sounds like It should be higher. For checking the regulator I pulled vacuum line off and got an extra 10psi. @QBhoy For the distruster cap, the error was present before...
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    Mercury MAG 350 MPI Horizon loss of HP

    Running into an issue with my 2008 mercury Mag 350 horizon inboard (OW697731) (3-3500349 S) with Borg Warner 71C. It seems like I have loss of HP hoping to get some positive direction from the forum. Thanks in advance. Symptoms: - Starts up great, idles perfect, no issues going on plane. once...
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