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Thread: Fuel line

  1. #1

    Fuel line

    93 sl750, what type of fuel line can I use for the pick up that goes in the tank?


  2. #2
    Polarisitis loonatik's Avatar
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    Those new 1/4" polyurethane clear blue tubes should work fine. I had them in the tank for whole season without an issue. Just make sure they are clamped or at least zip-tied.
    This year I kicked mine up a notch and used aluminum tubing instead, just happen to have quite a few at work.

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    Click avatar for tech links/info, donation request K447's Avatar
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    I have some notes about fuel line in my signature links.

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    bowsniper's Avatar
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    Get the "memory" out of the hose first. or else it will curl up on ya.. especially if the hose is near the end of the reel when they cut your piece.Make sure your weighted screens are on the ends. Thats what keeps them in position for accurate fuel readings. Tie-wrap them on. Note that 1 tube is longer than the other. measure them. the longer one is for your "reserve" and the shorter one is your "main". line in the tank.

  5. #5
    Polarisitis loonatik's Avatar
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    What mine looks like.

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    PolarisNut's Avatar
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    Tygon (I don't like Tygon for anything else though...it's too soft) or the Polaris "transparent red" fuel hose. Most fuel line IS NOT rated for submersion in fuel, and will eventually rot out.

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    Click avatar for tech links/info, donation request K447's Avatar
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    Quote Originally Posted by loonatik View Post
    What mine looks like...
    Why are there three tubes going to the bottom of the tank?

    Has the vent nipple been extended down into the tank?

  8. #8
    Polarisitis loonatik's Avatar
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    The short one is for ON, the longer 2 are Reserve and Return.
    Vent is just a nipple on top side, nothing under it.

  9. #9
    Click avatar for tech links/info, donation request K447's Avatar
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    Quote Originally Posted by loonatik View Post
    The short one is for ON, the longer 2 are Reserve and Return...
    The original/stock return is just an open nipple at the top of the tank. I wonder if submerging the return line changes anything.

    Possible siphoning of fuel through the return line, or changing the back pressure in the return line?...

  10. #10
    Polarisitis loonatik's Avatar
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    Quote Originally Posted by K447 View Post
    The original/stock return is just an open nipple at the top of the tank. I wonder if submerging the return line changes anything.

    Possible siphoning of fuel through the return line, or changing the back pressure in the return line?...
    I added a thumb primer, extending the tube down is just a way to be sure there's always fuel in the line. It didn't seem to change anything at all.

    Possible siphoning <-- Excellent point! Even though I have not encounter this problem but I would say it's possible if there's a leak in the carb like in seat and needle.

    Back pressure <-- It should be all gravity once the fuel passes thru the constrictor, IMHO anyway.

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