2012 Suzuki DL650 Adventure wierd vibration at 4700RPM in all gears.

Discussion in 'Land of the Rising Sun: ADV Bikes from Japan' started by Roy Phillips, Jun 12, 2013.

  1. Roy Phillips

    Roy Phillips Adventurer

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    Has anyone had a wierd 4700RPM strong vibration on a 2012 or 2013 DL650. Happens in all gears. The bike was smooth above and below this RPM. If you hold it there the whole bike sings through footpegs and bars and the engine runs rough. Most annoying as it occurs right at highway cruising speed, right in the middle of the throttle range. Raised the issue with Suzuki customer service in BC, Canada. They tested two other bikes and now say this happens to all vstroms with the Gladius engine and is a "Normal Harmonic" They refused to address the problem as a warranty issue. Furthermore they say that all engines have such harmonic vibrations??? In the middle of the power curve? Anybody out there seen this problem too?
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    #1
  2. GtiKyle

    GtiKyle Been here awhile

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    Checkout stromtroopers. They have SEVERAL threads dedicated to this.

    It's the crashbars that are causing this problem.
    #2
  3. Roy Phillips

    Roy Phillips Adventurer

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    According to the Vancouver island District parts and service Suzuki Rep, This 4700RPM vibration occures with or without the OEM Adventure(SW Motech) crash bars and he assured me he had tested a Gladius as well, which has no crash bars and the vibration occurred there too? So I am at a loss as to what to do next.
    #3
  4. CanadianTiger

    CanadianTiger Adventurer

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    Mine doesn't vibrate at those rpms... inn fact it is as smooth as my previous (2009 Wee) bike...
    #4
  5. ronandkat

    ronandkat Been here awhile

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    Keep in mind, it may not be in the service reps (Suzuki) best interest to actually diagnose, that there is actually an issue.
    Seems like was suggested speak with like minded individuals who have tackled this problem, and see what the solution was, and whether Suzuki was involved with the fix. At the very least this scenario gives you ammunition.
    I also would test ride a different one of same year, and see if the vibes are there, and not rely on someone else's opinion of the vibes.
    #5
  6. soldierguy

    soldierguy Been here awhile

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    Every engine does have a certain RPM at which it will vibrate more. Actually any object does. Lots of variables as to when this occurs.

    On my '13, I can feel vibes increase around this RPM, but nothing obnoxious at all. I've got aftermarket Givi crashbars, and it did it before and after the install of those. But again, it is nothing obnoxious at all...just a slight increase in the intensity of the engine's sound and vibration level.

    If it's bad, I'd loosen and then re-tighten all your engine mounting bolts, and give the whole bike a thorough once-over, checking to make sure all the bolts are tight.

    Also, V-twins with dual throttle bodies (actually any multi-cylinder beast with more than one throttle body) must have the throttle bodies synched. Mine were slightly out of synch prior to the 600 mile service (I didn't realize it), the shop synched them, and it did seem to run smoother at all RPMs after the synch. That could be a contributing factor.
    #6
  7. kyle31

    kyle31 n00b

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    My 2012 Adventure does this from roughly 4900 to 5k rpm...smooth as butter any other rpm....just don't run in that small rpm range.

    to bad I cruse at high way speed right in that range a lot...really does not bother me all that much.
    #7
  8. PeterW

    PeterW Long timer

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    Yes, checked. I hadn't noticed it before, but there are increased vibes at those rpm's.

    Just change gear and avoid that spot ?, or change to a 16T front sprocket.

    It's there on mine as well, but no where near as bad as on my K6. I only noticed the change when I looked for it.

    Check the engine mounts if it's really annoying ?.

    Pete
    #8
  9. Roy Phillips

    Roy Phillips Adventurer

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    After I escalated the problem at Suzuki Canada, Suzuki had the engine bolts taken off and retorqued. They say the vibration is "reduced 25%." They also found the chain was too tight( that is how it was delivered by Suzuki) and readjusted it. However when I rode it home I now get vibration across the range with another huge shaking around 3000RPM and another around 6000RPM as well as the original 4700RPM. Looks like they made it worse. The Suzuki Vancouver Island district rep reported the vibration is a "normal harmonic" and it is inherent in the design of the bike. I tried to return the bike but their Suzuki Canadian service manager said that "It is not a manufacturing defect, perfectly safe and I will just have to live with it, or sell it to someone else if I am not happy" You would think it is in Suzuki's own interest to investigate the problem. However they do admit there is a vibration at 4700RPM, they just don't want to deal with it.
    #9
  10. Pecha72

    Pecha72 Long timer

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    How many miles on your bike? I noticed vibration at about 5k rpm, when almost brand new, now it's at about 3000 miles and vibration's down to doesn't bother me.
    #10
  11. fragile_this_side_up

    fragile_this_side_up Long timer

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    I feel like this problem is being blown out of proportion, no? i have a 2012 ADV. owned for 2 months and about 3500 miles on it. doesn't bother me. maybe a personal preference?
    #11
  12. soldierguy

    soldierguy Been here awhile

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    I think you need to take a look at not just the engine mounts, but all the bolts & bits on the bike. And definitely check to see if the throttle bodies are fully synced, and that the engine is running as it should. If you think about it, the engine is the source of the vibration, and it's going to vibrate everything it's attached to. To me it then makes sense to make sure the engine is running as smoothly as possible. I'm telling ya...on both the Wee and a Guzzi I used to have, they both smoothed out after having the throttle bodies synced. Just my 2 cents.
    #12
  13. Roy Phillips

    Roy Phillips Adventurer

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    Thanks for the many responses. Feedback from various sources reveals much.
    1. Givi crash guards seem to have a history here and have broken in a few cases. Bolts have come off. The Oem (Motech or lookalikes?) engine guards appear to be contributing to the vibration problem on the 2012/2013 vstrom based on forum feedback
    2. The vibration feels more like an unbalanced engine at 4700RPM.
    3. If it was just "harmonics" and just one frequency then it is probably a resonant frequency.
    4. North America emission control test at idle and mid range. Ironically this " vibration" occurs at mid range and at highway crusing speed. Perhaps Suzuki leaned out the mixture there?? Two feedbacks say that throttle body synch and or PCIII FI mapping changes have cured their mid range vibration woos.
    4. It is not just personal preference or being picky. I have driven more than twenty bikes in my life. I have had 4 Suzuki's, three were WEEstroms. Two I have really enjoyed and the reason I went back for a third. This 2012 adventure vstrom is uniquely bad.
    5. The fact that Suzuki Canada Service is doing everything to avoid addressing this tells me that they know about this problem but do not wish to address it. Action to date seems to be covering their backside based on their rep's initial refusal to even look at it.
    6. I am really happy that others do not have this problem. The Suzuki Canada service rep and dealer mechanic had told me it was generic to all WEEStroms with or without the adventure gear and in fact to all bikes.
    7. Being treated like I am the problem is insulting. I am a professional engineer as well as a 50 year biker and know what resonance, if it is resonance, and or excessive vibration can do to equipment.
    8. If I personally try to address the problem I will void the new bike warranty.
    9. I bought it just a few weeks ago, it only has 2000 miles on it. I reported it immediately and have been waiting for weeks for action from Suzuki Canada to "address and fix" the problem or take it back.
    10: Suzuki Canada and the dealer mechanic admit there is a vibration at 4700RPM but say it is "Safe"

    Thanks again for the feedback
    #13
  14. Roy Phillips

    Roy Phillips Adventurer

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    Thanks for the many responses. Feedback from various sources reveals much.
    1. Givi crash guards seem to have a history here and have broken in a few cases. Bolts have come off. The Oem (Motech or lookalikes?) engine guards appear to be contributing to the vibration problem on the 2012/2013 vstrom based on forum feedback
    2. The vibration feels more like an unbalanced engine at 4700RPM.
    3. If it was just "harmonics" and just one frequency then it is probably a resonant frequency.
    4. North America emission control test at idle and mid range. Ironically this " vibration" occurs at mid range and at highway crusing speed. Perhaps Suzuki leaned out the mixture there?? Two feedbacks say that throttle body synch and or PCIII FI mapping changes have cured their mid range vibration woos.
    4. It is not just personal preference or being picky. I have driven more than twenty bikes in my life. I have had 4 Suzuki's, three were WEEstroms. Two I have really enjoyed and the reason I went back for a third. This 2012 adventure vstrom is uniquely bad.
    5. The fact that Suzuki Canada Service is doing everything to avoid addressing this tells me that they know about this problem but do not wish to address it. Action to date seems to be covering their backside based on their rep's initial refusal to even look at it.
    6. I am really happy that others do not have this problem. The Suzuki Canada service rep and dealer mechanic had told me it was generic to all WEEStroms with or without the adventure gear and in fact to all bikes.
    7. Being treated like I am the problem is insulting. I am a professional engineer as well as a 50 year biker and know what resonance, if it is resonance, and or excessive vibration can do to equipment.
    8. If I personally try to address the problem I will void the new bike warranty.
    9. I bought it just a few weeks ago, it only has 2000 miles on it. I reported it immediately and have been waiting for weeks for action from Suzuki Canada to "address and fix" the problem or take it back.
    10: Suzuki Canada and the dealer mechanic admit there is a vibration at 4700RPM but say it is "Safe"

    Thanks again for the feedback
    #14
  15. Pecha72

    Pecha72 Long timer

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    Maybe locate another -12 / -13 Wee from somewhere (a dealer, perhaps) and ride that bike and your bike back to back? If it's a dealer, maybe let them test your bike as well, should be pretty evident, if your bike vibrates substantially more.
    #15
  16. Roy Phillips

    Roy Phillips Adventurer

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    After Suzuki Canada dropped the ball, the dealer stepped up to the mark with me. They had only tested 3 adventure models with the bars previously, all vibrated, so they now test rode a naked Vstrom. No vibes at 4700RPM!!

    Yesterday they let me ride a new naked vstrom DL650A. No vibes. So the engine guards/carsh bars do look like the problem.

    The dealer remarked that he dinged a bar on the showroom adventure model and it rang. I repeated the test by dinging the bar hard with my fingernail, waited several seconds then touched the bar lightly with the soft part of my finger, it was still vibrating like a tuning fork.

    Next steps, we are removing the engine guard crash bar on my bike but have to order in the original mounting bolts for a naked Vstrom. If that works the problem escalates back to Suzuki and SW Motech for a permanent fix on the OEM engine guard.

    Feeling so much more positive after yesterday.
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  17. soldierguy

    soldierguy Been here awhile

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    That's funny...not "hahahaha" type of funny, but odd. My Givi crashbars are rock solid and I noticed no difference in vibes after I installed them, so I'm kinda surprised the Suzuki bars vibrate.

    If nothing else, maybe try getting some rubber washers to put between the bars and the bike? It might isolate the bars a bit and reduce vibes.
    #17
  18. Dolly Sod

    Dolly Sod Red Clay Halo

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    My 2007 wee Strom has a Vibration right at 5800 rpm. Test rode a buddies 2012 strom and he's got a similar vibe at 4800 rpm. For me, 5800 rpm is right at cruise on the highway. I just try to creep up or drop back from it.

    YMMV, I agree it's "safe" and more than likely a character of the bike.
    #18
  19. welder

    welder Long timer

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    just buy a klr 650, ride it every other day and your vstrom will feel as smooth as glass
    #19
  20. Roy Phillips

    Roy Phillips Adventurer

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    Latest feedback on Stromtroopers and here show these possible fixes.
    1. Remove the engine guard/crash bar. Your 4700RPM vibes should depart. Now go back to Suzuki and claim a replacement engine guard/crash bar or add on that works. If you don't use fix 2, then you may opt for frame sliders. I would prefer something like fix 2 myself as you keep the crash bars and it provides better protection for your engine sump and filter on real adventure rides.
    2. Install the sump guard which clamps the centre of the crash bar to the frame or engine. That should totally alter the frequency of resonance on the crash bars and take it away from the crusing range altogether. Vibes should depart.
    3. Alternatively, install highway pegs that also clamp the centre of the bar to the engine or frame. Vibes should depart. If not clamped your feet weight should dampen the vibes when your feet are on the pegs.
    4. Add weight to the crash bar. Check out Givi's latest crash bar for the 2012 adventure bike and you will see a clamp on device there. Don't know it it will fit the Suzuki bar but perhaps Suzuki could come up with something similar as an add on fix for their crash bar.
    5. A temporary fix is to install rubber between the clamp in the middle of the crash bar. This should dampen the vibes but they are still connected by the screws metal to metal so I would expect some vibes through the screws. If you apply too much rubber isolation you weaken the strength of the connection at the center if you ever go down as all weight goes on the 2 screws and not through the bar itself to the other side.

    Hope this helps.
    #20