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Thread: 1992 K75 Standard fuel hose

  1. #1
    Registered User 105643's Avatar
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    1992 K75 Standard fuel hose

    If this has been addressed in the tech area, then I missed it and apologize. I had replaced the fuel hose (from tank to the injector pipe) earlier this year with just ol' regular fuel line. Finished a short ride today and the bike stalled when I pulled in the driveway. Odd. The bike normally idles perfectly. Tried starting a couple of times and same thing.......stalls when I let it idle. Then I noticed the gasoline smell. Looked down and saw gas pooling underneath the bike. Looked at that hose I had replaced and it was split right up by the tank.

    My question is......is that fuel hose supposed to be "special", as in reinforced?

    Thanks in advance

    Bill Yarian
    Indianapolis

  2. #2
    Registered User GTRider's Avatar
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    Fuel hoses on fuel-injected bikes need to be SAE 30R9 rated- that is a reinforced hose that can withstand the high pressures in a FI system. Your K-bike fuel pump puts out about 100psi and the fuel regulator takes that down to around 40 at the injectors.

    So yes, you need special hose but it’s often available at regular auto parts stores.
    More info here: https://www.hemmings.com/stories/201...should-not-use

    Best,
    DeVern
    DGerber
    1983 R80ST — 1984 R80 G/S-PD — 2004 K1200GT w/Hannigan S/C — 2010 K1300GT — 2018 R1200GS
    BMWMOA#52184, AMA#271542, IBA#138

  3. #3
    Registered User 105643's Avatar
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    Thanks, DeVern.

    Bill Yarian
    Indianapolis

  4. #4
    3 Red Bricks
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    "Regular" fuel hose is made for old carburated engines and rarely sees pressures above 10 psi.

    ALWAYS specify hoses made for fuel injection for your bikes.

    ALWAYS specify SUBMERSIBLE fuel injection hoses for your in tank hoses.




    LONG MAY YOUR BRICK FLY!

    Ride Safe, Ride Far, Ride Often

    Lee Fulton Forum Moderator
    3 Marakesh Red K75Ss
    Mine, Hers, Spare

  5. #5
    #13338 PGlaves's Avatar
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    Quote Originally Posted by 98lee View Post

    ALWAYS specify SUBMERSIBLE fuel injection hoses for your in tank hoses.
    And do not be surprised when the price is about $20 a foot for the submersible stuff. It is what it is.
    Paul Glaves - "Big Bend", Texas U.S.A
    "The greatest challenge to any thinker is stating the problem in a way that will allow a solution." - Bertrand Russell
    http://web.bigbend.net/~glaves/

  6. #6
    Registered User 105643's Avatar
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    Many thanks, guys. This is why I ask questions here. I always get the correct answer.

    Experience is a cruel teacher. It gives the test first and the lesson after.

    Bill Yarian
    Indianapolis

  7. #7
    Registered User drneo66's Avatar
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    Quote Originally Posted by 105643 View Post
    Many thanks, guys. This is why I ask questions here. I always get the correct answer.

    Experience is a cruel teacher. It gives the test first and the lesson after.

    Bill Yarian
    Indianapolis
    Outside:
    https://www.beemerboneyard.com/161211800405ft.html

    Inside:
    https://www.beemerboneyard.com/subhosekit.html
    Current: 2007 BMW R1200RT, 2013 F800GS
    Former: 1995 BMW K75S, 2009 BMW G650GS
    MOA Member #:150400, IBA#: 37558

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