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  1. #1
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    Cool Can I get some 2.4 Feedback?

    I lost a few holes today...

    Using Klotz with Premium fuel, High Five prop turning 6200 rpm on the high side... she let go while cruising nice at 40 mph at 4000 rpm.

    Thoughts? Suggestions?

    Here is the Google Drive with the images.
    https://drive.google.com/drive/u/0/#...kFYdUktS1VDdGs
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  2. #2
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    I'm no expert, but if the cylinders and pistons are somewhat oily yet I would guess overheated.
    http://www.stvowners.com

    2003 Cougar 22MTR w/300xs x 3
    90 21Skater w/300xs - sold
    98 STV Euroski w/280 - sold


    2006 Trailblazer SS 6.0l 395hp

  3. #3
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    Quote Originally Posted by Euroski View Post
    I'm no expert, but if the cylinders and pistons are somewhat oily yet I would guess overheated.
    heated for sure when 2 go down

  4. #4
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    What's imprinted in the top of the piston... looks too "square" to be a ring retaining pin or a needle bearing? Almost looks like the ground strap from a spark plug?
    Last edited by David - WI; 04-05-2015 at 10:21 PM.

  5. #5
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    It has surface gap plugs... motor had plenty of water pressure and was not hot. I will pull the front half next week.

  6. #6
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    [QUOTE=Tango;2743885]It has surface gap plugs... motor had plenty of water pressure and was not hot. I will pull the front half next week.

    Sorry about your motor, that sucks!!! Please do follow this to the end and try to let us know what happened. I have a 200/2.4 and dang sure dont want the same. Good luck.
    1990 Shadow bass boat w/ 2.4 200 Merc. Totally resto'd boat and love it!

  7. #7
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    What do the heads look like? Snap a pic of them too? Did she seize or smoke the rings?
    1990 Shadow bass boat w/ 2.4 200 Merc. Totally resto'd boat and love it!

  8. #8
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    QUOTE=rgsauger;2743891]What do the heads look like? Snap a pic of them too? Did she seize or smoke the rings?[/QUOTE]

    Motor lost power but can be turned by hand and restarted... I elected not to push it so I immediately shut it down, got a tow back to the trailer and pulled the heads. The heads look clean save for one little ding by the tiny square object. They'll be easy to clean up. I'll take a pic of the heads tomorrow.I

  9. #9
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    Are those pics representing 3 holes or 2.

    Rock
    Team Junk

    No sparkling wiggles in here, only dump truck grinches.

    "Screamin Heathen"

  10. #10
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    Attached are the Head pics.

    Thoughts? Sugesstions?

    I am now inclined to believe the ring let go.
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  11. #11
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    Since the port side seems to be the issue I might consider the switch boxes. Looks like some early stage detonation on the piston without the square dents. JMO>

    Rock
    Team Junk

    No sparkling wiggles in here, only dump truck grinches.

    "Screamin Heathen"

  12. #12
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    Is there a piece stuck in the head yet?

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  13. #13
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    Quote Originally Posted by David - WI View Post
    Is there a piece stuck in the head yet?

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    yes, there is.

  14. #14
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    Man. this is like pulling teeth.

    You might poke/pull it out and see if you can figure out what it is and where it came from, it might give you a pretty good idea how expensive it will be to fix.

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