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  • Breather hose questions

    I'm jetting my carb following the guide on the forum but I wanted to know when I put a new filter on my roadie, the two hoses that go to the old air box. One is the breather from the back head and the other comes from the carb. What do I do with the carb hose? I know people filter and hide the hose coming from the back most cylinder but I can't seem to find anything regarding the smaller hose coming from the carb.

  • #2
    The small hose that connects to the carb is nothing more then a breather for the fuel bowl vent. Just run the hose so that it helps keep dirt and crud from getting into the carb.

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    • #3
      flip the hose end for end and it will point right up the back rail and to under the fuel tank. I put a breather element on the end of it but you can put any filter that will fit. When you put it under there any residual oil will flow back into the engine instead of on the ground or on the bike like it will if you run it to under the bike. Click image for larger version  Name:	breather hose post.jpg Views:	0 Size:	28.7 KB ID:	124430

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      • #4
        Use this type of filter under the tank up by the ignition. Click image for larger version

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        • davej
          davej commented
          Editing a comment
          that's the one.

        • Nwrodie
          Nwrodie commented
          Editing a comment
          I'm going to have to change mine up, I put a filter on the end of the line, down by my idle adjustment, and all it does is slobber oil down the right side of the transfer case.

      • #5
        ok, i got my 2nd roto rooter done on my sinuses a few years back, and after 30 years of not being able to smell, i can smell a guy smoking a cigarette driving in a cage in the opposite direction, or in front of me on the RS, P U. that shat stank. so does the crankcase vent smells like sheet, so , i had mine routed under the seat, but i think the airflow eddys bringing the pungent fumes up to my nose under certain conditions, so i am moving/extending all 4 of mine down thru the frame under the drive train area where presume ably theres more air flow , if thta dont work its going back into air cleaner , but they do get it dirty faster that way

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      • #6
        Okay this 2000 trike stinks like gas no matter what I do. I may have to put the breather back into the air filter so it gets sucked back in. It was flooding. Road Star motor oil smells like gas. I wonder if this one is just worse. I did lower the float level to just above the seam instead of 5 mm above the seam.. I took off the PCV filter from the cylinder vent tube and the k and air filter and cleaned both of those. When I stop it stinks like s***. Any ideas?
        ps. This is the motor that clacks at low speeds in spite of new lifters valve adjustment, runs like a bat out of hell tho.

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        • #7
          have you changed the oil since you lowered the float level? The oil shouldn't smell like gas unless it has gas in it

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          • #8
            All my RS oils smell of gas at change time.

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            • #9
              I would have thought that getting up to operating temperature for sustained amount of time would burn it Off?

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