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  1. #1
    Join Date
    Apr 2014
    Location
    Owensboro, KY
    Posts
    205

    Default Boat won't go over 3000 rpms?

    Anyone ever had an issue where their boat won't go over a certain amount of Rpms? After being out all day and after a boarding session the boat would go to 2800-3000 rPMs no matter how much throttle I gave it?

    2008 340 EXT Cat engine

  2. #2
    Join Date
    May 2013
    Location
    Vancouver WA
    Posts
    5,040

    Default

    Quote Originally Posted by JHutch View Post
    Anyone ever had an issue where their boat won't go over a certain amount of Rpms? After being out all day and after a boarding session the boat would go to 2800-3000 rPMs no matter how much throttle I gave it?

    2008 340 EXT Cat engine
    Yes, I had this happen, I have the same engine as you. The engine is going into limp mode. 3000 RPM's is the magic number. Take a look at your oil pressure gauge and I'll bet money it's low. and I'm also betting that the reason it's low is because you're low on oil (probably 3 quarts or more low). Check your oil, top off your oil, and look for any leaks.
    2008 Moomba Mobius XLV. Monster Cargo Bimini, WS Rev 410's, Polk Cabins, 3 Infinity Subs, PPI amps, WS420, Exile BT, upgraded ballast pumps, up to 3,500+ pounds of ballast, Blue LED's...
    1992 Supra Sunsport. **SOLD** 2k pounds ballast, Surf System, Blue LED's everywhere, decent audio system.
    Tow Rig: 2013 F150 Ecoboost FX4 (wife's rig) Other money pits include:1998 BMW M3 Cabriolet, 2009 Audic A6 Avant 3.0T, 2005 Kawasaki ZX-6R 636.
    www.TraysonsToybox.com

  3. #3
    Join Date
    Jul 2013
    Location
    Wisconsin
    Posts
    132

    Default Boat won't go over 3000 rpms?

    When was the last time you changed the plugs?


    Sent from my iPhone using Tapatalk
    2008 LSV. 1100 rear sacs and IBS. ACME prop is next
    Ronix One w/ Parks bindings

  4. #4
    Join Date
    Apr 2014
    Location
    Owensboro, KY
    Posts
    205

    Default

    Checked the oil. It was full. As far as I know the plugs are original, boat has 220 hours.

  5. #5
    Join Date
    Sep 2009
    Location
    Langdon ND
    Posts
    27

    Default

    Fuel filter, just had the same thing happen on my 06 LSV. Took off the filter and could hardly blow through it.

  6. #6
    Join Date
    May 2015
    Location
    Woodlands/Conroe, TX area
    Posts
    297

    Default

    It goes into the limp home mode for almost any error. I had it do the same due to a fuel filter as mentioned above.
    2008 Moomba Outback DD resurrection

  7. #7
    Join Date
    Jul 2013
    Location
    Wisconsin
    Posts
    132

    Default Boat won't go over 3000 rpms?

    I'm no expert, but I think you may have a hard time specifically diagnosing what is wrong without just replacing things and seeing if it fixes it. I suggest starting at the least expensive. For me it sounded like it was missing so I guessed the plugs were bad and ended up correct. Runs better than ever before so at 220 hrs it can't hurt to just change the plugs, filter, and other suggested maintenance items first.


    Sent from my iPhone using Tapatalk
    2008 LSV. 1100 rear sacs and IBS. ACME prop is next
    Ronix One w/ Parks bindings

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