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  1. #1
    Member
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    Jan 2008
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    ohio
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    DON help!!!! 150 Optimax Guardian mode

    98 150 Opti

    Ran 6 miles roughly and shut down. fished for 10 min fired up and idled to another spot few hundred yards away. fished for 15 mins then tried to fire and the motor just cranked.

    Finally fired up and wet straight into guardian mode.

    Warning beep beeps non stop....


    Serial # OG681323

  2. Member
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    Jul 2013
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    Galena, Kansas
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    #2
    Only sure fire way to know, is to have it read.

    This is why having smartcraft gauge can come in handy.

    Only thing I would suggest is check reserve oil tank on engine is filled all the way, no air gap.
    If you run your main tank too low, that can cause it.

  3. Member
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    May 2011
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    Spangle, WA
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    #3
    It beeps non stop or is it a continuous tone?

    Regardless, this will likely be the best first step - WARNING HORN "BEEPED"
    _______

    Phil
    '09 Hewescraft ProV
    '09 150 Optimax


  4. Member
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    ohio
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    #4
    beeps non stop.....

  5. Mercury 3L/4 Stroke/Verado Moderator EuropeanAM's Avatar
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    Apr 2008
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    Greenville, SC (US)
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    #5
    Definitely need to see the printouts. That will be key.

    Make sure your battery is properly rated, FULLY CHARGED, properly CONNECTED, and tests good under a load test.


    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).
    Mercury Parts, Mercury Outboards, Smartcraft & Accessories, Injector Service, TDR Reeds- BBC Sponsor

  6. Member
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    ohio
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    #6
    Update....

    One of the small linkages on the throttle system by the air Plentium fell off.

  7. Mercury 3L/4 Stroke/Verado Moderator EuropeanAM's Avatar
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    Apr 2008
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    Greenville, SC (US)
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    #7
    Good catch! Sometimes the most valuable diagnostic tools are eyeballs and ears.


    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).
    Mercury Parts, Mercury Outboards, Smartcraft & Accessories, Injector Service, TDR Reeds- BBC Sponsor