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  1. #11
    ptscon's Avatar
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    Quote Originally Posted by K7fxho View Post
    That isnít good to do at all. Cold starts are most crucial in engines. On top of being itís running for 10 seconds and not getting up to operating temperature. Condensation is more likely to build up inside the engine. Just fog it and be done. Or leave it alone.
    Cars have no issues with -effincold starting. The short run is not meant to warm up the motor but to re-coat the cylinders with oil.

    Still fogging makes more sense if the ski is just sitting.

  2. #12
    Click avatar for tech links/info K447's Avatar
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    Quote Originally Posted by Supertoyz View Post
    Found it
    Thank you for that Yamaha Tech Exchange PDF

    WCA2011-003
    Engine Fogging Recommendations for Current Waverunners and Yamaha Boats

    Written for the SHO engine, looks like it would directly translate to the SVHO engine?

    When it stops raining I shall have another look at my GP1800 SVHO engine regarding access to the relevant ports.


  3. #13
    Yamaha told me that it's the most recent and still applies to all current engines. It worked as the instructions specify on my 2019 SVHO until I had the ECU flashed. Now the engine stalls when I disconnect the engine pressure sensor so I can't fog through the intake manifold any more....but it worked as instructed with the stock ECU programming.

  4. #14
    mittens's Avatar
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    I don't fog it. I use air compressor and blow from the pissers to blow out any water in the oil cooler, and motor. purges a good amount out of all the lines, Oil cooler, motor, and intercooler.

    all comes out the pump. then park inside clean with a clean and dry bilge.

    Change plugs and oil for new season once all winter mods are done.

  5. #15
    Click avatar for tech links/info K447's Avatar
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    Quote Originally Posted by Supertoyz View Post
    Ö SVHO until I had the ECU flashed.

    Now the engine stalls when I disconnect the engine pressure sensor Ö
    Which flash?

  6. #16
    Quote Originally Posted by K447 View Post
    Which flash?
    Deans...I discussed it with him last time we spoke and he was going to look into it but I never heard back. Didn't even think of it again until I winterized the machine yesterday and remembered I'd have to skip that step.

  7. #17
    WaterDR's Avatar
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    Funny how there is so much conflicting info on this. I have spoken to three different dealers and they all do something different.

  8. #18

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    also different climates can get by with just blowing air through ski or running fuel stabilizer but cold/freezing climates yes fogging is has to done and where you store it off season, i miss the south rode all season

  9. #19
    Click avatar for tech links/info K447's Avatar
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    Quote Originally Posted by grinchmonster2000 View Post
    Ö cold/freezing climates yes fogging is has to done Ö
    Fogging the engine has little to do with the temperature during storage, and more to do with protecting the metal from corrosion during storage. Fogging the engine is not done because the machine will get cold.

    It is done when there is a concern about rust inside the motor.

    http://greenhulk.net/forums/showthre...=1#post3148912

  10. #20
    Team Bilford's Avatar
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    Quote Originally Posted by ptscon View Post
    If you don't feel like fogging just start it up for 10 seconds once a month.
    I don't start mine, just spin it for 5-10 sec using flood mode. I do this about once a month since fogging a 4 stroke seems weak at best.

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