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Thread: 2009 r1200gs stumbles and surges

  1. #1
    Registered User
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    2009 r1200gs stumbles and surges

    I have a 2009 R1200gs with 45000 miles, just lately it has begun to surge and stumble after I fill it with fuel. It isn't just one brand, Chevron, Texaco, Murphy and Shell so far. After I fill up and get on down the road a piece it starts this stumbling and surgeing. So far it doesn't last very long and then all appears to be well again until the next fill up. Any ideas ?

    Joe

  2. #2
    Ed Kilner #176066
    Join Date
    Nov 2011
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    Mississauga, ON
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    Tank been off?

    Using fuel creates a vacuum. There must be a way to let air into the tank. If this is partially plugged...

    I had an anti-tip valve and hose on the tank on my Triumph. If the tank was off and the hose not vertical, this same behavior happened. Opening the gas cap would fix it temporarily, until I had a chance to reroute the hose.
    Ed
    2011 R1200RT Thunder Gray Metallic; 2000 Triumph 900(sold)
    http://triumphantsblog.blogspot.ca/

  3. #3
    Still plays with trains. tinytrains's Avatar
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    Oct 2009
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    Are you filling above the filler neck? Excess fuel can run into the evap canister and make it so wet, the tank cannot breath.

    Just a thought.
    1988 K75 Low Seat
    2009 R1200R Roadster

  4. #4
    Benchwrenching PGlaves's Avatar
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    "Big Bend" TX
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    Well, I think attack the simple guess first. I think water in the bottom of your fuel tank. Filling the tank stirs up the water/crud lying at the bottom of the tank. Some gets sucked into the fuel pump and in the injectors. Things get bad until the stirred crud again settles to the bottom of the tank.

    So, step one is to use a good fuel dryer - IsoHeet in the red bottle is my favorite. Regular Heet in the yellow bottle or some other brand might well work too.

    Step two - if step one fails to solve the problem - is to remove and thoroughly empty the fuel tank before refilling it with known good fuel.
    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://www.bigbend.net/users/glaves

  5. #5
    Registered User
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    Corinth, MS
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    Problem may be solved ! Finally noticed a vacuum at the fuel cap, when you're dumb you're dumb , checked hose lines going to and from charcoal filter and fuel tank breather valve and found one stopped up, cleared it and all appears to be well. Thanks guys for the input, helped tremendously.


    Joe

  6. #6
    na1g
    Join Date
    May 2011
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    Greater Bahstin, Massachusetts
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    Good news, Joe, and I'll file the info away for future reference.

    And by the way, gasoline with ethanol has its own built-in "fuel dryer": the ethanol, which is the main ingredient in "gas line antifreeze". That's about the only good think to be said for ethanol.

    pete

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