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  1. #1
    Member
    Join Date
    Jan 2018
    Location
    Alabama
    Posts
    26

    2006 150 optimax rough idle eventually shuts off

    If I do it at home on the ear muffs it runs fine but when in the water at no wake speed it will act up. I’ll post a video but it doesn’t shut off in video. It runs fine anything over idle speed. What do you guy think it could be?

    https://photos.app.goo.gl/XHrQVaTRSdXw1JxV9
    Last edited by Bigtiny; 07-17-2019 at 12:02 AM.

  2. Member
    Join Date
    Jun 2013
    Location
    LONGVIEW TEXAS
    Posts
    14,036
    #2
    need to see what fuel and air pressures are doing at low rpm
    .................................................. ...the scariest thing in life is the unknown ...................................

  3. Member
    Join Date
    May 2011
    Location
    Spangle, WA
    Posts
    6,221
    #3
    Lots of info in the 2.5L forum (what your engine is) - Mercury - 2.0/ 2.4/ 2.5 Liter High Performance
    _______

    Phil
    '09 Hewescraft ProV
    '09 150 Optimax


  4. Member
    Join Date
    Jan 2018
    Location
    Alabama
    Posts
    26
    #4
    2.5 liters. Had a diaphragm assembly put in a year ago .