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  1. #1
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    Warming up an Optimax

    About how long should I idle to let it warm up to temperature, especially in 45 -50 degree water? It's a 2006 200hp if that matters.

  2. Member
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    #2

    Re: Warming up an Optimax (Tr176)

    120 degrees

  3. Member
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    #3

    Re: Warming up an Optimax (Tr176)

    First start, I watch the SmartCraft temp gauge as I idle out until I see the temp drop when the thermostats open at about 132d. It takes a while in cooler water - never timed it, but wouldn't be surprised if it's three or four minutes.

    After that during the day, if the temp when I start is 100d+, wait 'til it gets above 120 - if the temp is below that, I wait for the thermostats again.
    So many honey-dos . . . . . so little motivation

  4. Mercury 3L/4 Stroke/Verado Moderator EuropeanAM's Avatar
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    #4

    Re: Warming up an Optimax (Tr176)

    You need to monitor engine temperature via a Smartcraft Instrument, and ensure that it reaches AT LEAST 120 degrees BEFORE ACCELERATING.

    Before shutting engine down, you should also ensure the temperatures STABILIZE at above 120 degrees (30-60 seconds at idle 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 48 years (learn something new every day).
    Mercury Parts, Mercury Outboards, Smartcraft & Accessories, Injector Service, TDR Reeds- BBC Sponsor

  5. Member
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    #5

    Re: Warming up an Optimax (Tr176)

    I don't have a SmartCraft yet, just got the boat. Any guidelines on how long it typically takes, I'd rather err on the high side. Is five minutes more than enough, ten minutes?

  6. USAF and DOD retired Phoenix Jim's Avatar
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    #6

    Re: Warming up an Optimax (Tr176)

    then I would be safe and go with 10 mins. I was in 44 degrees yesterday and it took 5-7 mins before my smartcraft showed 120
    2018 Phoenix 920 Pro XP

  7. Member
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    #7

    Re: Warming up an Optimax (Tr176)

    Thanks Jim, that's what I was looking for.

  8. Member
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    #8

    Re: Warming up an Optimax (Tr176)

    I timed it yesterday, water temp 59d, 4 1/2 minutes at idle speed for the thermostats to open.
    So many honey-dos . . . . . so little motivation

  9. Mercury 3L/4 Stroke/Verado Moderator EuropeanAM's Avatar
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    #9

    Re: Warming up an Optimax (Puma Jim)

    <table width="90%" cellspacing=0 cellpadding=0 align=center><tr><td>Quote, originally posted by Puma Jim &raquo;</td></tr><tr><td class="quote">then I would be safe and go with 10 mins. I was in 44 degrees yesterday and it took 5-7 mins before my smartcraft showed 120</td></tr></table>

    The problem.... trying to utilize a "time method" of monitoring temp is simply GUESSING.

    All it takes is one small pebble.... or one little chunk of wood in a thermostat, and that engine will NEVER come up to temperature.

    And if you're using the "guess" method.... you'll only find out when it's too late....



    Dual Mercury Master Technician- for Mercury Outboards, Mercruiser and Mercury Racing at European Marine in Greenville, SC.
    Still consider myself a "Marine Apprentice" after 48 years (learn something new every day).
    Mercury Parts, Mercury Outboards, Smartcraft & Accessories, Injector Service, TDR Reeds- BBC Sponsor

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