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Thread: Fuel dripping from overflow line

  1. #16
    Left Coast Rider
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    Nov 2011
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    Bob and Roger,
    Thanks for your input. I'll order up the Beemer Boneyard stuff today and, while I wait for them to arrive, buy a bag of marshmallows just in case.

  2. #17
    Registered User
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    May 2023
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    Fayetteville, AR
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    Vent hose fuel dripping FIXED

    So I had the same issue on my 94 R1100 RSL. Fuel started dripping slowly from the vent tube after I parked the bike, at first I thought this was normal (duh). It is obviously not normal. After reading this thread, I removed the gas cap filler port from the fuel tank to take a look around. I am pretty sure the overflow and vent tubes were original, because without too much effort one of them just deteriorated and broke off from the the bottom of the tank.
    I went to O'Reilly's Auto parts and bought two 2' pieces of fuel line hose. The hoses are 5mm interior diameter, but the closest I could find was 3/16" (which is 4.8 mm) and that worked perfectly. I bought 4 small hose clamps as well. I removed the fuel tank, removed the fuel filter plate on the bottom/side of the fuel tank and that is where if found the problem. Both hoses had deteriorated and were the cause of the leak..I replaced them, and viola! No leak. It was a pretty easy fix. Thanks forum!

  3. #18
    Back in the saddle again mikegalbicka's Avatar
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    Aug 2014
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    Lakeland,FL
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    Quote Originally Posted by daximir View Post
    I went to O'Reilly's Auto parts and bought two 2' pieces of fuel line hose. The hoses are 5mm interior diameter, but the closest I could find was 3/16" (which is 4.8 mm) and that worked perfectly.
    Odds are that hose is not rated for immersion in fuel, rather only to contain fuel. Did you check that?

  4. #19
    Focused kbasa's Avatar
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    Quote Originally Posted by BC1100S View Post
    How imperative is it that I replace the original quick disconnects on my 1100S ('03 with 40k km)? Not sure that they've ever been disconnected.

    Apologies for partial thead jack...
    There are some little tiny o rings in there that have been immersed in gas for 20 years, so it gets a little more imperative every day, imho.

    You donít want a fuel leak in your garage.
    Dave Swider
    Marin County, CA

    Some bikes. Some with motors, some without.

  5. #20
    MOA #24991 Pauls1150's Avatar
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    Not just the O-rings, but on the earlier bikes (at least), some of the innards were plastic.
    I've seen broken ones, and a couple that broke during careful re-mating.
    Nuke with extreme prejudice!

  6. #21
    Focused kbasa's Avatar
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    Quote Originally Posted by Pauls1150 View Post
    Not just the O-rings, but on the earlier bikes (at least), some of the innards were plastic.
    I've seen broken ones, and a couple that broke during careful re-mating.
    Nuke with extreme prejudice!

    I swapped Tina's QD's on her RS with some metal ones I got from Beemer Boneyard, ISTR.

    My RT ate one and I just ordered up some metal ones and swapped them in my garage. It didn't take long. But eventually, they issued a recall for the top of the pump developing cracks and about two weeks later my garage smelled like gas. Sure enough, I had the issue in the recall.
    Dave Swider
    Marin County, CA

    Some bikes. Some with motors, some without.

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