2002 225 Weekender misfires

Discussion in 'Sport Boats' started by Frank A., Aug 8, 2017.

  1. Frank A.

    Frank A. New Member

    Aug 8, 2017
    South Shore, Long Island, NY
    2002 Sea Ray 225 Weekender
    5.0L B3

    Came across this forum and registered so I could ask this question. I own the subject boat with ~420hrs on it. In purchasing it late last year, this is my first full season with the boat. I've noticed that when trying to plane out, or whenever I'm running between 1000-1500rpms, the engine seems to misfire. Once planed-out it runs smooth. Although my mechanic took it for a ride and said it was nothing serious, it bothers me. Any thing I can try? Oil is very clean & I'm told there is an additive in the fuel at the marina.

    Also, my daughter has a 215 Express about the same age & hours and I notice that their boat runs much much quieter. I have a swim platform, they do not. Could that be the source of the engine loudness?

    Thanks in advance,

  2. CliffA

    CliffA Well-Known Member GOLD Sponsor

    Dec 29, 2009
    Lake Norman, NC
    2001 Sea Ray 340DA
    Name: 'Happy Place'
    4.5kW West. Generator
    Purchased Nov. 2014
    Fresh Water Use
    Twin Merc. 6.2L (MPI)
    Raw Water Cooled
    V-Drive Transmissions

    welcome to CSR....I would suggest doing a full tune-up on the engine to start with....many, many times issues like you are having get fixed with a tune-up....

    I used to own a 215EC so I am familiar with the sound of the engine and outdrive....if your 225WE is louder than a 215EC you may be hearing excessive whine from the gears in the outdrive, not the engine.....I suppose it is possible the swim platform could be enhancing the sound of the outdrive but I would think just the opposite in that the platform may reduce the noise.......the engine is undercover with soundproofing....most of the noise you hear is likely the outdrive....it may not hurt to have an experienced mechanic take a look at the outdrive just in case there is an issue.....plus you have a Bravo drive and the 215EC probably has an Alpha drive.....two very different drives with different sounds....

    plus it is possible something is wrong with the engine exhaust on your boat making it louder than it should be.....a mechanic can check that also...

    good luck...

    Last edited: Aug 8, 2017
  3. jason78

    jason78 Active Member TECHNICAL Contributor

    Sep 3, 2008
    Fort Mill, SC / Lake Wylie
    1997 20 Outrage
    200 Merc Offshore
    Second the tune up advice from Cliff! I have seen a corroded cap and rotor cause this exact problem on this engine more than once.
  4. OllieC

    OllieC Active Member

    Mar 11, 2013
    2005 Weekender 215
    Mercruiser 5.0 mpi, Bravo III
    Cliff mentioned the exhaust. With Bravo III's they have an exhaust bellow that attaches to the outdrive which allows the exhaust to exit the center of the propeller. It could have a hoe in it- -or- when I had mine replaced, the local marina just installed a 1/2 rubber sleeve coming out of the transom gimbal area and not extending fully, like the exhaust bellow, to the outdrive. It was very loud and annoying because the exhaust is now coming out of the gimbal location . I had them immediately replace it with the correct bellows.
  5. Stevan Hicks

    Stevan Hicks New Member

    Nov 10, 2017
    2000 245 Weekender
    Gas 383 Bravo 2
    This post is a little old or I'm just new but......don't spend a penny till you do a compression check. You be surprised if your boats ever been in sea water.
  6. techmitch

    techmitch Well-Known Member SILVER Sponsor

    May 1, 2008
    Chesapeake Bay, Middle River/Frog Mortar Creek MD.
    1999 270 DA
    Twin 4.3s W/Alpa I Gen II's
  7. Frank A.

    Frank A. New Member

    Aug 8, 2017
    South Shore, Long Island, NY
    2002 Sea Ray 225 Weekender
    5.0L B3
    I'mmmmmmmmmmmmmm back.
  8. Espos4

    Espos4 Active Member

    Jan 1, 2017
    Long Island NY
    2007 240 Sundeck
    350 MAG Bravo 3 W/DTS
    Any follow up to your original post?
  9. Frank A.

    Frank A. New Member

    Aug 8, 2017
    South Shore, Long Island, NY
    2002 Sea Ray 225 Weekender
    5.0L B3

    The marina changed out first the ICA valve, then cap and rotor. That did the trick. My "I'm back....." was referring to 1 and done.

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