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Thread: Surging RPMs

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  1. #1
    Join Date
    Jun 2013
    Location
    Lake Orion, MI
    Posts
    432

    Default Surging RPMs

    The other day we were out surfing and towards the end my boat began surging slightly while at a constant speed, fluctuating a few hundred RPM up and down at a pretty steady frequency. Almost seemed like it was running out of gas (it wasn't). I thought maybe it was PP related at first, and I don't remember now if I tried turning off the PP and going manual but pretty sure I did and it still did the same thing. I'm thinking possibly fuel filter, or God forbid a fuel pump. Anything else simple I'm overlooking that could cause this?
    2006 Mobius LSV
    Previous ride - 2000 Supra Launch

  2. #2
    Join Date
    Jun 2007
    Location
    Vancouver, WA
    Posts
    4,251

    Default

    Old enough to know better, young enough to do it anyway.

    2001 MobiusV

  3. #3
    Join Date
    Jul 2008
    Location
    Des Moines, IA
    Posts
    2,633

    Default

    If you haven't swapped the fuel filter lately that would be a good first step. Might be a good idea to mix in some fuel additives in case you have some water in the tank.

  4. #4
    Join Date
    Jan 2008
    Location
    Pensacola, FL
    Posts
    1,544

    Default

    check tranny oil level
    1997 MasterCraft 205

    2008 Moomba Outback
    1999 MasterCraft Sportstar OB
    1992 MasterCraft 205
    1999 Malibu Response LX
    1987 Marlin Magnum Skier

  5. #5
    Join Date
    Jun 2013
    Location
    Lake Orion, MI
    Posts
    432

    Default

    Hmmmm...no problems last night at all. I'm wondering if my gas gauge is off a little? I added 5 gallons and had no problem at all. I'd be shocked if it was only due to low fuel.

    Either way, I'll be going through everything during winterization in a few weeks and it'll have a new fuel filter regardless.
    2006 Mobius LSV
    Previous ride - 2000 Supra Launch

  6. #6
    Join Date
    Jan 2008
    Location
    Tallahassee, FL
    Posts
    11,389

    Default

    Could be a load of sugar or some water dumped in there by those waterski guys you teed off.
    My Mom said I'm not allowed to get wet!
    2008 LSV
    2000 Outback LS (sold)
    Exile Tunes
    PWI
    LLTR!!!!!!!!



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