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  1. #1

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    Last run of the season ended in a cloud of white smoke

    I took my sportster (2005 4tec SCIC) out for one last run on the weekend and after cruising around for about 10 minutes I noticed white smoke coming from the exhaust and the power was down. I pulled it out of the water and found a decent amount of oil in the bottom of the hull, hard to say exactly how much since it was mixed with water. I also pulled the sparks plugs and the one closest to the supercharger was charred black the other two looked fine.

    Any suggestions where to start I've got all winter


  2. #2
    boost junkie skidoochris's Avatar
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    Mar 2012
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    how many hours on your super charger?

  3. #3
    Well, at least it failed at the end of the season. Still sux because your last nice ride was cut short and now you've got a problem. Maybe an opportunity to tear it down and search for other gremlins so your next season is hopefully trouble free.

  4. #4
    wotxxxsd's Avatar
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    Steam from the exhaust is normal.
    White smoke means she's burning oil.
    How low on oil is she?

  5. #5

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    do a compression test.

  6. #6
    imp0ster's Avatar
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    light blue smoke = oil. white = coolant.

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  8. #7
    imp0ster's Avatar
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    light blue smoke = oil. white = coolant. Only one gunked plug is usually a head gasket or badly failed stem seal. If they all had crud I'd say pull the IC and if there's oil on it then it's getting past the SC seal in a bad way.

  9. #8

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    Jun 2010
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    The supercharger was rebuilt just before summer 2011, so its got 4 years of moderate usage on it now. No good way to read the hours on the boat without taking it to the dealer.

    It was definitely burning oil, I'm just not sure how much since a bunch of it ended up in the hull. It was reading at the low mark on the dipstick after I pulled it from the water, it should have been pretty close to full before that.

    I ran a compression last weekend, I didn't really want to warm up the engine so I performed it cold. I got 10psi on cylinder 1 and 110psi on cylinders 2 and 3.

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