BMW fuel line connector failures?

Discussion in 'GS Boxers' started by funhouse, Jan 11, 2008.

  1. funhouse

    funhouse Overdue

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    A friend with an MV says the plastic quick disconnect fuel line/tank connectors used by MV and BMW (on the GS) among others is subject to failure and is being replaced under warrenty with metal connectors......anyone heard about this, specifically on the HP2? Bruce
    #1
  2. olie

    olie Long timer

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    I do not know about MV and BMW, but the guys with Aprilia Futura and CapoNord have reported failures and replace the britle plastic coneectors with metal ones. I did use "Colder" brand..
    #2
  3. JimVonBaden

    JimVonBaden "Cool" Aid!

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    False as far as I know. If they replace them under warranty, it is with a plastic one, same as came off.

    Jim :brow

    PS The R1200GS uses somewhat unique plastic QDs, I am not sure anyone makes a compatable part!
    #3
  4. Jamming

    Jamming Desert RAT

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    It's not plastic...it's brass...here ya go..pick your ID of the hose
    http://www.omega.com/pdf/tubing/couplings/ft-lcseries/ft-lcseries.asp
    #4
  5. Jhammer

    Jhammer Been here awhile

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    My BMW quick disconnects failed after 4years
    Replaced with hose I did not trust the plastic disconnects anymore.
    #5
  6. Jhammer

    Jhammer Been here awhile

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    #6
  7. Hodakaguy

    Hodakaguy NorthWest Adventure Rider

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    I'm getting ready to change my quick connects out this week on my 1150 ADV when I do the brake fluid flush. I ended up going with the Swagelok quick connects. They are a little longer and more expensive but I work around Swagelok connects every day and know they are bullet proof. You won't find better fittings, connectors ect.

    I ended up going with the brass connectors instead of stainless steel for cost reasons. The Stainless ones come with Viton seals, the Brass ones come with Buna seals. I custom ordered the brass connects with the Viton seals installed for reliability under gasoline service. They are positive shut off on both sides so no fuel will spill when you disconnect. Connect and Disconnect at will without having to worry about lubing or o-rings that swell and won't go back on. I ordered one extra male end so I can connect a couple foot hose up to it and put it in the tool kit, will make it easy to connect up the adaptor and drain fuel for any reason I need to while out on the road (transfer to a friends bike, fill a stove ect).

    Here's a couple pics of the Swagelok fittings.

    [​IMG]

    [​IMG]

    Quick Connects with the Hose Barb Adaptors

    [​IMG]

    All the parts ready to go


    Hodakaguy
    #7
  8. Adam Arcane

    Adam Arcane Adventurer

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    I like the idea of unbreakable metal QD's. I've had plastic units on my 1100GS for over 50K so far. I carry a spare and a spare O ring.

    I do my own work, so I've always handled the disconnect/reconnect carefully, using a tiny amount of silicone grease to lube the tiny Viton ring. Makes it slip together more easily. I've always used this grease on O rings. No problems so far.

    My tank comes off every 6K and takes a couple of minutes. Don't know about later bikes, but the 1100 didn't come with QD's.
    #8
  9. rideLD

    rideLD The further the better!

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    I think there is some confusion here. The OP is talking about the HP2 which does not even have plastic fuel line connectors to the best of my knowledge. The others are talking about 1150GS does have them and they have been known to fail.
    #9
  10. JimVonBaden

    JimVonBaden "Cool" Aid!

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    Quote:
    <TABLE cellSpacing=0 cellPadding=4 width="100%" border=0><TBODY><TR><TD class=alt2 style="BORDER-RIGHT: 1px inset; BORDER-TOP: 1px inset; BORDER-LEFT: 1px inset; BORDER-BOTTOM: 1px inset">Originally Posted by JimVonBaden
    False as far as I know. If they replace them under warranty, it is with a plastic one, same as came off.

    Jim :brow

    PS The R1200GS uses somewhat unique plastic QDs, I am not sure anyone makes a compatable part!

    </TD></TR></TBODY></TABLE>
    Maybe I am reading it wrong, but the OP said that BMW was replacing the originals with metal. That, in my understanding, is not true.

    Jim :brow
    #10
  11. Global Rider

    Global Rider Alps Adventurer

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    And that is why I think they fail. Owners are forcing QDs together due to the O-rings that swell after a year. Replace the O-rings (they're only 10 cents each) every time you take the QD apart and you probably won't have any QD failures.

    No QD failures on my 2003 and 2004 GS Adventures. That makes them 5 years old.
    #11
  12. FrisbeeR1200GS

    FrisbeeR1200GS Been here awhile

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    My 99 Tiger and my 01 Speed Triple had connectors replaced under warranty...don't recall if they switched to metal or a stronger plastic. Agree with the comments to replace the inexpensive "o" rings on a regular basis, and carry spares.....odds are high that you will bugger the "o" ring when it's not convenient....you know, like the dark of night, etc. I know you know.
    #12
  13. bemiiten

    bemiiten League of Adventures

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    #13
  14. PETDOC

    PETDOC Long timer

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    Anyone interested in brass Swagelok connectors as pictured I can let you have pair that were only used for about 10 miles for $45 plus shipping. They are as stated stated bullet proof, but I becided to go with shorter replacement. Just PM me if interested.
    #14
  15. Hodakaguy

    Hodakaguy NorthWest Adventure Rider

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    Hey, where were you when I ordered my full price set :baldy :D

    Hodakaguy
    #15
  16. slartidbartfast

    slartidbartfast Love those blue pipes

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    The quick disconnects that BMW uses are available in several different materials but were intended for laboratory and lwo pressure commercial fluid handling use, not automotive service. However, I can well understand why BMW chose them because the metal ones are significantly heavier.

    The design is such that you WILL cut the O-ring if you try to plug or unplug the connector without the release button fully clicked down. Regular buna O-rings will stand up to fuel pretty well but cost only pennies for a bag so why not keep a few spares somewhere?

    Every time I have removed the tank from my 1100GS, I have struggled to find something suitable to plug the fuel lines. I usually end up with 1/4" drive socket extensions clamped into the hose ends but it is an awkward and sometimes messy process - especially if the tank is full. I looked at adding BMW quick disconnects but baulked at the ~$100 cost from BMW (about double the cost of the same connectors from a lab supply store), then decided they were probably too fragile anyway. What I really wanted was some short, durable, lightweight, self-sealing connectors at a reasonable price but afaik no such thing exists (the stainless ones are really nice but still can cut the o-rings and pricey!!!!).

    A reasonable and neat alternative to quick disconnects would be clamps to pinch off the hose. I have seen some simple clips made from heavy wire but I had trouble finding them. Until recently, I was considering getting a couple of cheap vise grips and grinding the gripping part down until it makes a rounded clamping surface. Yesterday, I finally found a posting on here where some devices called hose pinchers were mentioned. A web search turned them up in several places with autobarn.net apparently having the biggest selection (no affilliation - in fact I've never used them.) For under twenty bucks, I'm going to throw some of those in my toolbox and if I can get the lightweight plastic ones, I'll carry them on the bike.
    [​IMG]
    #16
  17. JStancampiano

    JStancampiano PhotoJoe

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    I find it amazing that these plastic quick connects are failing and there has never been a recall on them.

    We have all seen the other recalls that have been issued (gas tank bolts, brake lines) for problems that I have never seen reported by anyone. The fuel line connect failures have been happening for years and yet there is no recall. Does someone have to die first? Mine failed on my 07 GSAdv spraying gas all over me and the exhaust pipes as fuel ran down the side of the tank. I have three friends with 2003-4 K120gts that have failed These things have been breaking for years in K1200s,gts,R1000, r1150s, and yet no recall. This is a part that should never fail in use, must have something to do with the large number of them out there and costs involved.

    If you have ever had a problem with these connects failing, register a complaint with nhtsa:

    http://www-odi.nhtsa.dot.gov/ivoq/

    Maybe we can get something going.

    Sorry for the rant, but this is dumb!!

    Joe
    #17
  18. JimVonBaden

    JimVonBaden "Cool" Aid!

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    There is nothing amazing about this. It is a wear item. With probably 99% of all failures related to assembly/disassembly during maintenance. Rarely does one simply start leaking on its own. It is usually an accident, dropping the bike, or ham fisting them.

    Jim :brow
    #18
  19. ADVBedouin

    ADVBedouin Rider

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    See what you started bruce! :)
    #19
  20. JStancampiano

    JStancampiano PhotoJoe

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    Mine had never been apart and never dropped, it just cracked where it screws into the fuel pump plate and the plate has small hairline cracks radiating out from the female threads (3/8 npt) . It's very possible that these tapered threads were overtightened from the supplier, in which case this would be a one time failure. I have never seen it listed as a maintenance item to replace these every so many miles. The connect that screws into the fuel pump plate is not available as a separate part, you must replace fuel pump plate assembly ($300.00+)


    Joe
    #20