V-Strom quit and won't start.

Discussion in 'Land of the Rising Sun: ADV Bikes from Japan' started by Jamie Z, Mar 3, 2013.

  1. Jamie Z

    Jamie Z Long timer

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    About a week ago, I went out to run some errands on my bike. I started it and let it idle while I put on my helmet and gloves. The bike started fine, but just as I was about to swing a leg over, the idle slowed down and the bike stalled.

    Since it was somewhat chilly out and the bike had not run in maybe a week or so, I wasn't too surprised. I restarted the bike and went to get on. Again, it stalled.

    I made another restart attempt. It started very hard and once running I had to rev it repeatedly to keep it running. I managed to ride it to the nearest gas station, about 1/2 mile away. The bike surged a couple of times and I had to keep revving the throttle otherwise it felt like it wanted to quit.

    I filled up with fuel, and the bike refused to restart. I had to push it home.

    At home, I checked the front plug wire to see if it was wet since we'd gotten some rain the day before. Everything seemed clean and dry.

    The only potential problem I found was that the rubber plugs I'd installed a while back over my throttle body hoses were cracked and probably not sealed very well. But even when I kinked the hoses, the bike didn't start.

    I'm not sure what to check next. The bike is a 2005 DL650 with about 116,000 miles. It's never not started. It's never quit or stalled, and I've never had a problem with it. What should I look for?

    Jamie
    #1
  2. Unstable Rider

    Unstable Rider Moto Fotografist

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    :lurk
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  3. Anticyclone

    Anticyclone Ride more worry less

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  4. It'sNotTheBike

    It'sNotTheBike Banned

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    The behavior ( hard start, surging ) you describe sounds
    very much like there is a significant vacuum leak somewhere in the
    intake system. If you have any friends who are in the
    car repair business and they have a "smoke machine"
    and you can get the bike to their shop or get them to
    bring the smoke machine to your bike, that is the best,
    easiest and usually quickest way to detect the source of a
    vacuum leak. The smoke machine is connected to the intake
    manifold on the bike and then you need to look
    very closely for smoke to be emitted from the source
    of the leak. ( a smoke machine usually burns some sort of
    mineral oil and that makes the smoke which is visible
    when it is pumped into the intake and then emitted from the
    source of the leak )


    Absent a smoke machine you can look over everything very
    carefully and make sure all the connections to the
    manifolds, throttle bodies, etc. are tight and 100% free of leaks.
    It sounds the the very first place you need to look
    at is the rubber plugs you installed over your throttle body hoses.
    If there are even small vacuum leaks there you MUST fix the leaks. Leaks in
    the intake can cause "false air" which confuses the fuel injection
    metering system and can cause an engine not to start or to surge
    because the leak causes a "lean" mixture condition, in which there is
    too much air being supplied to the engine such that the fuel mixture is
    rendered too lean for the engine to run properly.


    Good luck !


    .
    #4
  5. baloneyskin daddy

    baloneyskin daddy bikaholic

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    Fuel pump and filter.
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  6. scottie boy

    scottie boy Homebrew Guru

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    There is a guy at work who has over 200k miles on his DL1000. To say his bike has been reliable would be an under-statement. A while back his bike was running like crap, it turned out to be just the fuel filter. Cheap fix and if that is not the culprit, your filter probably needs to be replaced anyway.
    #6
  7. baloneyskin daddy

    baloneyskin daddy bikaholic

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    Run a hose from a small propane bottle into the airbox snorkel ,turn it on and try to start it ,if it fires its a fuel delivery problem.
    #7
  8. Jamie Z

    Jamie Z Long timer

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    Think we're onto something.

    Ran a fuel pump test today. Spec is minimum 300ml of fuel during three starting sequences. Mine pumped out a little more than 100mL. :eek1

    Also, it looks like this.

    [​IMG]

    If I inspect the fuel in the tank, it looks perfectly clean and clear. I think the fuel filter is clogged and it's picking up gunk... though I can't understand why there's such strong separation. Could be water in my tank?

    There's a cheap fuel filter modification that I'll probably attempt to do tomorrow, since the factory fuel filter is more than $200.

    Jamie
    #8
  9. Jamie Z

    Jamie Z Long timer

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    Clearly something is wrong. The only question I have is that when I read others' experience, they seem to all report poor running, poor driveability, generally bad performance. Mine seemed to happen sudden.

    I'll fix the fuel filter and then see what happens.

    Jamie
    #9
  10. baloneyskin daddy

    baloneyskin daddy bikaholic

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    I've had it happen both ways. Once the bike was running fine,I stopped for fuel and that was it ,no fuel pump. The second time ,on a used pump, it started stalling occasionally and bucking under a load. Again I replaced the fuel pump and it was fixed. The second pump I bought at an auto parts store for a ford van and with a few very minor tweaks it fit perfectly in the stock assembly. $90 COMPARED TO OVER $300. STILL WORKING FINE 3 YRS LATER.
    #10
  11. Big Toe

    Big Toe Been here awhile

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  12. D.T.

    D.T. Difficult but useful

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    I'm on the fuel pump bandwagon.

    I'd drain the tank and go through the fuel pump and filter. Repair as necessary...
    #12
  13. Unstable Rider

    Unstable Rider Moto Fotografist

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    Sounds like the fuel pump is the Doo Hickey of the Strom world... :evil

    This is getting good. Can't wait to hear how this one ends :deal

    All you guys dialing in fast. Hats off.
    #13
  14. scbiker

    scbiker Adventurer

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    Cold chilly wet weather with a near empty fuel tank is a good combination to get some condensation in your tank. Maybe try a bottle of the water absorber for fuel.. as I'm typing this, I realize that I haven't seen it for a while, I'm not sure if it still works on the gas with 10% ethanol. Either way try to drain more gas out until you get gas without the separation.
    #14
  15. Dolly Sod

    Dolly Sod Red Clay Halo

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    Looks like you have lots of water in the fuel. I'd drain the tank and fill with a known good source.
    #15
  16. theloop

    theloop Been here awhile

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    Off topic, but the 650 v strom was on my short list for my next bike, but after reading over $200 for a fuel filter, and over $700 for a fuel pump, the 650 v strom might be moving more towards the bottom of my short list.
    #16
  17. Dolly Sod

    Dolly Sod Red Clay Halo

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    What's your list look like?
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  18. Big Toe

    Big Toe Been here awhile

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    Don't worry the V-Strom is about the most realible bike out there. I know many people with over 100,000 mi. with no problems.
    #18
  19. Jamie Z

    Jamie Z Long timer

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    FWIW, my understanding is that the fuel pump itself has a very low rate of failure.

    However, my reading shows that the integrated high-pressure fuel filter inside the pump assembly often gets clogged. Replacing the (expensive) filter, or bypassing it and using an external automotive filter solves the low-flow problem.

    I should be able to fix it tomorrow for ~$50.

    Jamie
    #19
  20. Jamie Z

    Jamie Z Long timer

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    You did read that I have over 116,000 miles on my bike right? Factory fuel pump. Factory fuel filter.

    The problem is that the filter is not easily replaceable. There are instructions floating around the web on how to bypass the filter and replace it with an automotive inline type.

    But I can understand your hesitance. I'm going to have trouble trusting this POS after letting me down this one time. :rolleyes

    Jamie
    #20