Bike stalls following almost empty tank in Bolivia

Discussion in 'GS Boxers' started by V@lentino, Jan 27, 2014.

  1. V@lentino

    V@lentino Inspektor

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    Sep 7, 2008
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    826
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    Vankouver
    Hi Guys,

    My friends bike (2007 GSA) is stalling following almost having run out of gas. When we filled he put in 32.6 ltrs. After filling up oct 90 the bike stalled a couple of times. When starting on neutral the rev were hovering; not steady around +/- 1000 rpm. We took it to the dealer in La Paz and they ran the diagnostic no fault but they said the injectors might be dirty. They cleaned the injectors today and ran the diagnostic again with no fault. We left the dealer and made it back to the hotel 20 minutes ride and when we got there the bike stalled again. We did a couple of starts and it would not take until he added throttle. Once he stopped applying the throttle the bike died again.

    So we called the dealer and we go back tomorrow morning. Could it be something else than the injectors; maybe the plugs?

    Thanks for the help
    #1
  2. lhendrik

    lhendrik Truffle Rustler

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    Dec 10, 2008
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    2,451
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    Any thoughts that maybe you now have 30 liters of really bad gas in the tank? Drain and refill possible?
    #2
  3. mwhite5471

    mwhite5471 Been here awhile

    Joined:
    Dec 19, 2013
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    151
    Location:
    AZ
    Leaded fuel \ carbon canister damaged \ bad gas?

    Just some random thoughts.
    #3
  4. V@lentino

    V@lentino Inspektor

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    We both filled at the same spot, a busy modern gas station me about 1/2 tank, I experienced none of the symptoms. This said draining is an option we could consider, but this was not a crummy gas station and the oct was good...

    I'll ask him about the canister, I removed mine before the trip
    #4
  5. V@lentino

    V@lentino Inspektor

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    It seems like bad gas was part of the equation, but injectors were also dirty, they drained the tank, clean the lines and injectors and refilled with good gas and all seems normal again.

    I only hope that I don't suffer from the bad gas syndrome as I empty this tank. I only put a third or so when I filled up at the same place and I rode the bike back and forth to the dealer a few times to install a new tire and escort my friend, and despite a lot of throttle and and clutch work to maneuver the dense traffic in hilly La Paz, I had no problem. I did add some injector cleaner to the fill and if I find a bottle of oct booster I will add that too. Tomorrow we ride to Sucre, a long day ahead, just under 600 km.

    Thanks for the input
    #5
  6. V@lentino

    V@lentino Inspektor

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    So we rode 725 km from La Paz to Sucre. Filled up twice more 1/2 tanks, and my friend's problem is still there.

    When the engine is hot, the bike stalls most of the time. The few times it doesn't the RPMs hover +/- 1000.

    So although the bad gas probably did not help, it had no bearing whatsoever on how my engine is running. Not the carbon canister, its a German bike. Plugs maybe?

    What else could it be?

    Thanks
    #6
  7. Ma Duce

    Ma Duce TBD

    Joined:
    Jun 18, 2009
    Oddometer:
    92
    Location:
    SoCal
    Check to see if all spark plug coils are seated. Has the tank been removed lately? Asking this because you already said that the bike doesn't have a charcoal canister. But, maybe the vent hose could be pinched or plunged somehow. Next time you run the tank low some, open the cap and see if you hear any sucking sound. That would indicate that the tank is not venting freely and it will cause fuel starvation.
    #7
  8. slowoldguy

    slowoldguy Tire Tester

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    Location:
    West of Waco, Texas
    Fuel, air, fire, and sometimes fart. Check the possibilities no matter how remote. Good luck.
    #8