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Thread: Surging, Fuel Starvation, 2006 R1200RT

  1. #1

    Surging, Fuel Starvation, 2006 R1200RT

    My bike is a 2006 R1200RT with 48,000 miles
    Iíve been having a problem over the past few days that was at first intermittent, but now seems to be almost full-time. The engine acts as if it is not getting fuel. Initially it will start and run OK, but then, after riding anywhere from 1-50 miles, it will act as if it is starved for fuel, then it may either stall, or surge ahead as if fuel was restored, then repeat the process. At first this happened during the second half of a 100 miles trip, then later during a 60 mile trip. On both of these trips, the bike ran fine for a number of miles after the surging episode, although it did not seem to be running at 100% - engine seemed to run slightly rougher than usual. Yesterday the surging and stalling began right away and continued for all of a short 3 mile ride. This happens when the tank is full and when it is at ľ full. Opening and closing the fuel cap does not seem to relieve the problem. Beyond the riding, the bike was towed on a trailer for 600 miles before and after this began. It was also ridden on a rough gravel road for about 2 miles total, so there has been more than the usual amount of vibration over the past few days. There are no warning lights or messages showing up on the dash. I have a fair amount of experience caring for a 1974 BMW R75/6, but have only had this bike since March. The little I could find in searching suggests that this may be a problem with the fuel pump or its controller. Thanks, in advance, for your help!

  2. #2
    These are classic water in the fuel tank symptoms. Get some IsoHeet in the red bottle and add half the bottle to the fuel in the tank. It is worth the few dollars to eliminate that possibility.
    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/

  3. #3
    Registered User drneo66's Avatar
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    I agree with Paul as the place to start.

    If that doesn't cure it, I'd move on to the fuel pump controller (which can easily be bypassed to see if symptoms go away)
    Current: 2007 BMW R1200RT
    Former: 1995 BMW K75S, 2009 BMW G650GS
    MOA Member #:150400, IBA#: 37558

  4. #4
    Thanks. I will give this a try.

  5. #5
    Registered User drneo66's Avatar
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    Another random thought that's easy to do:take a look at the stick coils - making sure that they are fully seated and their corresponding connectors are in good shape.
    Current: 2007 BMW R1200RT
    Former: 1995 BMW K75S, 2009 BMW G650GS
    MOA Member #:150400, IBA#: 37558

  6. #6
    Check with GS-911 reveals:

    3 fault codes found:

    10167 Output stage to Electric Fuel Pump faulty (Most likely: Fuel pump electronics/driver)
    The fault is not present now.

    10168 Electric Fuel Pump System faulty
    The fault is not present now.

    10098 Tank Venting Valve defective
    The fault is currently present.

    Does this mean that the tank venting valve should be replaced?
    Is 13 90 1 433 603 FUEL TANK BREATHER VALVE the correct part?

    Or, could the breather valve problem be related to a fuel pump controller issue?

  7. #7
    Registered User drneo66's Avatar
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    Current: 2007 BMW R1200RT
    Former: 1995 BMW K75S, 2009 BMW G650GS
    MOA Member #:150400, IBA#: 37558

  8. #8
    Thanks! I have a fuel pump controller on order. I guess I will have to check to see if the Tank Venting Valve error - 10098 comes back after clearing. The error first occurred about 4,000 miles in the past, before I acquired the bike. Maybe it was disconnected, or removed?

  9. #9

    Problem resolved

    I checked into this problem this past weekend. For the vent valve, the valve and canister had been removed by a previous owner, so that explains the vent valve malfunction code. The fuel pump controller appeared to be original, and I replaced that with a new one. Rode the bike 52 miles yesterday, and all is good. Even when it was not surging/stalling, the bike did not seem to be running 100% before I replaced the controller. Maybe it was always a little starved for fuel. Now its running great and I'm happy to have this problem resolved. I'll use the connector from the fuel pump controller that I removed to make the emergency fuel pump voltage supply cable. Thanks to everyone for their suggestions and help with this issue!

    Mark Segraves
    Chicago, IL
    BMW MOA #214587

    2006 R1200RT with Hannigan Dual Sport Sidecar
    1974 R75/6
    Attached Images Attached Images

  10. #10
    Registered User drneo66's Avatar
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    Current: 2007 BMW R1200RT
    Former: 1995 BMW K75S, 2009 BMW G650GS
    MOA Member #:150400, IBA#: 37558

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