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  1. #1
    Cadet
    Join Date
    Apr 2007
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    27

    Default Seafoam in 2 strokes

    I want to decarb my newly acquired 1979 70hp outboard. I've read some of the suggestions on here and most people say to spray the seafoam directly into the carbs at some point in the process. Is this safe for a 2 stroke motor? Are there lubricating properties with this seafoam?

  2. #2
    Fleet Admiral
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    Default Re: Seafoam in 2 strokes

    Yes, you can inject directly into the carbs.

  3. #3
    Supreme Mariner
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    Nov 2009
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    South west FL
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    Default Re: Seafoam in 2 strokes

    Make sure you follow the directions on the can, other wise it will do you no good.

  4. #4
    Captain
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    Jul 2006
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    Default Re: Seafoam in 2 strokes

    http://forums.iboats.com/showthread....76#post2648076
    Have a look here. Best of luck. Rick.

  5. #5
    Chief Petty Officer
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    Florabama
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    Default Re: Seafoam in 2 strokes

    There are two kinds of sea foam- the spray kind that you fog into the carbs, and the liquid kind you add to your fuel. It is 100% petroleum so it's safe to fog in with the fuel/oil without a loss of lubrication.

  6. #6
    Admiral kfa4303's Avatar
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    Sep 2010
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    Default Re: Seafoam in 2 strokes

    Ditto. It works great for decarbing your motor. It will smoke like @#$@#$ but that's normal. You might want to warn the neighbors though You can decarb it in a test tank at home, but try to get her out on the water soon after so you can get her up to WOT on the water to completely burn out all the gook. When you're done, you may want to clean/replace the spark plugs as they can get pretty dirty in the precess. You should notice a lower, smoother idle and all around better performance. Best, most effective $10 you can spend. You should be able to get several treatments out of one can. Plus, you can use it in you car, lawn mower, or virtually any other 2-4 stroke engine. Good luck, Keep us posted.

  7. #7
    Vice Admiral nwcove's Avatar
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    Default Re: Seafoam in 2 strokes

    i didnt even know the stuff existed until recently, but just adding it to the fuel made a world of difference in my old motor!

  8. #8
    Petty Officer 2nd Class mstahl1171's Avatar
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    Mar 2010
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    Deale / Churchton MD
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    164

    Default Re: Seafoam in 2 strokes

    Seafoam works great!! Love the stuff. If you have really sticky piston rings you can also add Yamaha Ring Free...that stuff worked wonders for my Johnny 150 when Seafoam just didnt seem to do the trick. It cost more than seafoam but seems to do a better job IMHO when things are really gummed up. Keep us posted
    77 Arrowglass Bonita, 98 John 150
    65 13' Boston Whaler, 62 40hp Evinrude

  9. #9
    Vice Admiral jay_merrill's Avatar
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    Default Re: Seafoam in 2 strokes

    I prefer BRP Engine Tuner for ease of use, but Seafoam is a great product. Used as directed, it will do the trick for you.
    Please don't PM me on advice issues - let's keep that in the forums, so that everyone can benefit. Please note that I do not email PDFs, etc. I have a bandwidth limited aircard for internet access. My avatar does not mean I have any offical link to iboats. I just like it!

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