My F800gs STALLS LIKE ITS RUNNING OUT OF GAS! PLEASE HELP!!

Discussion in 'Parallel Universe' started by chunter, Jan 3, 2009.

  1. safd

    safd Adventurer

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    I had an F800S that did the same thing....a lot. Long story short BMW bought the bike back.
    I had hoped that they would fix that problem on the GS's but I guess not.
    +1 on going over to the to the F800.org site. They have a bunch of info on it.
    #21
  2. ROYAL COACHMAN

    ROYAL COACHMAN Long timer

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    This may be a separate issue indeed. Mt dealer has therorized that possibly water was getting into the air intakes during extremely heavy rain. What ever the case may be, I hope a solution can be found to cure this problem.
    My bike has 1700 miles on the clock as of yesterday and is running smooth as silk.

    Did your wife forgive you:lol3
    #22
  3. PhilSpace

    PhilSpace The Gov Administrator

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    Yup. Many moons latger and we are still together. Her ST, which failed the same way hasn't done it since I started keeping an eye on the switch, it also runs like a top and has 8K on her now.
    #23
  4. chunter

    chunter Adventurer

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    When I filled the tank (both times) I added between 2.5 and 3 gallons, so I know that there was fuel in the tank.
    #24
  5. jigdog

    jigdog Been here awhile

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    Hmm my 2001 F650 FI did the same thing. Deaaler could never fix it even after three tries. You would think the Feds would want to get involved with this as its a safety issue for sure.
    #25
  6. tmex

    tmex Long timer

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    Chunter, while I certainly hope your cannister fix works, I am having trouble with two symptoms that I can't explain relative to that solution.

    1> If it is the cannister why would the level of fuel in the tank influence the problem?

    2> If it is the cannister why would the bike restart almost immediately?
    #26
  7. tmex

    tmex Long timer

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    My vote is that a faulty sensor in the FI system is intermittently confusing the ECU. Pulling in the clutch drastically changes the engine loading almost instantaneoulsy. Some sensor is reacting to the abrupt chemistry change badly or a combination of sensor inputs lies outside the ECU map. I think it is a software/sensor issue. JMO Has anyone had this problem when running at a fairly constant load? I beleive the fuel management system on the F8 is adaptive i.e. learns from prior operation. When you take the bike back to dealer and the ECU map is reloaded the problem can clear itself temporarily.

    Of course, if my theory is correct it means that owners experiencing this problem are screwed.
    #27
  8. Frostbit

    Frostbit Is it cold in here?

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    Sorry to fizzle your theory but... The first time that mine died I was slowly rolling on the throttle in mid corner and the second time I was steady on the throttle going straight down the road.
    :scratch :scratch :scratch
    #28
  9. tmex

    tmex Long timer

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    Good input with the "steady as she goes" event. Of course, that could mean all owners of this bike will eventually be screwed.
    #29
  10. One Eye Mike

    One Eye Mike Been here awhile

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    That already happened..... MSRP....... Just kidding..... Not really. :D
    #30
  11. One Eye Mike

    One Eye Mike Been here awhile

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    #31
  12. chunter

    chunter Adventurer

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    My only guess is that the weight of the fuel column was helping feed the system. It could also have something to do with the amount of space in the tank filled by gas in relation to the amount filled by air/vapor.

    It would restart, but it would run very rough until it cut out again.
    #32
  13. jigdog

    jigdog Been here awhile

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    Interesting all these theories. My theory is DONT BUY A BMW and you cant have these exquisite problems.
    #33
  14. cisco

    cisco old fat guy

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    The problems encountered with my 950 KTM were more plentiful and much worse.
    Cisco
    #34
  15. HighTechCoonass

    HighTechCoonass Living the Dream....

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    This is my 4th BMW and not a one problem (Knocking on wood). 750 miles on my F800gs...not a hickup. It was "first on the list - first one in the states" model. You do have my attention!:ear I have ran it twice to the "low fuel light" here in Louisiana, running at sea level.
    #35
  16. tmex

    tmex Long timer

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    Jigdog, the F8 is like a beautiful woman. You know she will be expensive and cause you some anxiety, but it is a price any red-blooded man would gladly pay for the moments of joy and pride she would bring. Any state of the art possession will bring with it state of the art problems.

    Cisco, there are many threads of KTM990 having stalling problems - very similar to the F8. In fact, reading those threads is where I formed my theory about what is happening to the F8. The 990 has the additional problem that it is truly a butt ugly motorcycle.
    #36
  17. Stretch67

    Stretch67 Mad Scientist

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    I love laughing at false generalities.
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  18. Bar None

    Bar None Candy Ass

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    So don't buya BMW or a KTM.
    #38
  19. tmex

    tmex Long timer

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    There is really nothing else to buy in this class.
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  20. jigdog

    jigdog Been here awhile

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    The only way BMW is gonna get its act together and fix its problems is if people refuse to put up with it. You gotta stop enableing them! Besides a problem like the engine just stopping in mid ride could get someone killed...
    #40