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  1. #1
    Member
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    Jul 2014
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    Columbia ky
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    5

    1997 225efi overloading on fuel

    1997 225 efi idling like crap and jarring the hole boat rpm's jumping between 800-1000 and fuel running out of the prop while on hose I've put new reeds in it new injectors new plugs getting fire on all cylinders what could it possibly be I'm lost and can't find anything on here about it.

  2. Member
    Join Date
    Jul 2004
    Location
    Penn PA
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    15,189
    #2
    Are the injectors BRAND new?
    What did you set the TPS at?



  3. Member
    Join Date
    Oct 2016
    Location
    Santa Cruz, California
    Posts
    314
    #3
    I'd check the pulse pump.
    David Patten
    Automotive and marine technician.

  4. Mercury 3L/4 Stroke/Verado Moderator EuropeanAM's Avatar
    Join Date
    Apr 2008
    Location
    Greenville, SC (US)
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    95,178
    #4
    Please see the Announcements at the top of the Forum, and provide the REQUIRED info when posting. Thanks!

    Quote Originally Posted by clayshooter100 View Post
    I'd check the pulse pump.
    +1

    AND check the fuel pressure (provide results for):

    -Idle
    -Under Acceleration
    -15/30/60 seconds after engine shutdown ***

    *** Most critical in this case.


    Dual Mercury Master Technician- for Mercury Outboards, Mercruiser and Mercury Racing at European Marine in Greenville, SC.
    Still consider myself a "Marine Apprentice" after 47 years (learn something new every day).
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