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  1. #1

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    General catch can question

    So general question how many people can actually smell there fumes after going fast wot and slow down I ask because fumes are heavy after riding and like I said after wot and I slow down if wind is right I can smell


  2. #2
    ncdoo's Avatar
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    Very common, probably running a little rich though. It a lot better than too lean.

  3. #3
    Sanfish's Avatar
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    Quote Originally Posted by meinstein1987 View Post
    So general question how many people can actually smell there fumes after going fast wot and slow down I ask because fumes are heavy after riding and like I said after wot and I slow down if wind is right I can smell
    Too much smell (fumes) can be caused from blow-by (worn rings). But long ago I altered my catch can and made it vent outside the hull, works great! I keep my ski in garage and with seat off and never cared for a smelly garage - I've since rebuilt motor so its less of an issue. I wrote an article about the mod a while ago.

  4. #4

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    Yeah I figured the ring part I know I have to rebuild soon I have about 200 hours on the engine

  5. #5

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    Didn't know if it's a major issue or something I can hold off on until I can get my money together to do it

  6. #6
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    Quote Originally Posted by INTERCOASTAL BOB View Post
    If you don't like the smell , just get a catch can that catches the oily muck and sends the gases on to the intake . You will eliminate the smells but more importantly prevent blow by vapors from mucking up the oil in a way that just pressure from the gasses flowing around the cylinder can't do as effectively. I have read at high rpms these gasses represent such a small % of air flow as to be of no consequence.
    I did the same. Catch can with the gases returning to the intake. No smell in the hull. Though I also have a blower that automatically turns on for 15 minutes after engine shuts off, which helps keep the smell and moisture down.

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