1980 GS1100 Gas cap vented?

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  • russr33
    • Feb 2026

    #1

    1980 GS1100 Gas cap vented?

    Is the gas tank vented through the cap on an '80 GS1100E? On the highway I'll start to get fuel starved until it eventually dies. Won't happen around town. Removed the gas cap and problem solved. The only other place it could be is the line coming off the fuel sending unit, which is clear of obstruction. I'm assuming it's the cap, just wanted to make sure. Thanks in advance for the help.
  • tkent02
    Forum LongTimer
    Past Site Supporter
    • Jan 2006
    • 35571
    • Near South Park

    #2
    Originally posted by russr33
    Is the gas tank vented through the cap on an '80 GS1100E? On the highway I'll start to get fuel starved until it eventually dies. Won't happen around town. Removed the gas cap and problem solved. The only other place it could be is the line coming off the fuel sending unit, which is clear of obstruction. I'm assuming it's the cap, just wanted to make sure. Thanks in advance for the help.
    Yes, I think all the GS caps should be vented.
    http://img.photobucket.com/albums/v5...tatesMap-1.jpg

    Life is too short to ride an L.

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    • Guest

      #3
      Take it apart and clean it with brake cleaner. Beware small pieces so don't open it up over a small pepple driveway.

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      • tkent02
        Forum LongTimer
        Past Site Supporter
        • Jan 2006
        • 35571
        • Near South Park

        #4
        Originally posted by chef1366
        Take it apart and clean it with brake cleaner. Beware small pieces so don't open it up over a small pepple driveway.
        Small pepple have driveways?
        http://img.photobucket.com/albums/v5...tatesMap-1.jpg

        Life is too short to ride an L.

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        • earlfor
          Forum LongTimer
          Charter Member
          GSResource Superstar
          Past Site Supporter
          • May 2002
          • 42413
          • off grid cabin 1/24/26 7pm

          #5
          Originally posted by tkent02
          Small pepple have driveways?

          Yes! normal people call them sidewalks.

          Earl :-)
          Komorebi-The light filtering through the trees.

          I would rather sit on a pumpkin and have it all to myself than be crowded on a velvet cushion. H.D.T.

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          • Guest

            #6
            All right All right
            pebble.
            Gotcha

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            • tfb

              #7
              All caps should be vented somehow... from your lawn mower to your GS. You can't get fuel out unless you get air in!

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              • tkent02
                Forum LongTimer
                Past Site Supporter
                • Jan 2006
                • 35571
                • Near South Park

                #8
                Originally posted by tfb
                All caps should be vented somehow... from your lawn mower to your GS. You can't get fuel out unless you get air in!
                All tanks should be vented, doesn't have to be through the cap.
                http://img.photobucket.com/albums/v5...tatesMap-1.jpg

                Life is too short to ride an L.

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                • BassCliff

                  #9
                  Hi Mr. russr33,

                  Are you using a fuel filter? How's your float height? Just curious.


                  Thank you for your indulgence,

                  BassCliff

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