• Ciao Guest - You’ve landed at the ultimate Guzzi site. NEW FORUM REGISTRATIONS REQUIRE EMAIL ACTIVATION - CHECK YOUR SPAM FOLDER - Use the CONTACT above if you need help. New to the forum? For all new members, we require ONE post in the Introductions section at the bottom, in order to post in most of the other sections. ALWAYS TRY A SEARCH BEFORE STARTING A NEW TOPIC - Most questions you may have, have likely been already answered. DON'T BE A DRIVE-BY POSTER: As a common courtesy, check back in and reply within 24 hours, or your post will be deleted. Note there's decades of heavily experienced Guzzi professionals on this site, all whom happily give endless amounts of their VALUABLE time for free; BE COURTEOUS AND RESPECTFUL!
  • Be sure to see the GTM STORE link also above for our 700+ product inventory, including OEM parts and many of our 100% Made-in-SoCal-USA GTM products and engine kits. In SoCal? Click the SERVICE tab above for the best in service, tires, tuning and installation of our products or custom work, and don't miss our GT MotoCycles® (not) art on the BUILDS tab above. WE'RE HERE ONLINE ONLY - NO PHONE CALLS MADE OR RECEIVED - DO NOT EMAIL AND ASK QUESTIONS OR ASK TO CALL YOU.
  • There is ZERO tolerance on personal attacks and ANY HYPERLINKS to PRODUCT(S) or other competing website(s), including personal pages, social media or other Forums. This ALSO INCLUDES ECU DIAGnostic software, questions and mapping. We work very hard to offer commercially supported products and to keep info relevant here. First offense is a note, second is a warning, third time will get you banned from the site. We don't have the time to chase repeat (and ignorant) offenders. This is NOT a social media platform; It's an ad-free, privately funded website, in small help with user donations. Be sure to see the GTM STORE link above; ALL product purchases help support the site, or you can upgrade your Forum profile or DONATE via the link above.

Abnormal vibrations after letting off the throttle - 2017 V9 Bobber

S247

Just got it firing!
Joined
Apr 18, 2016
Messages
8
Location
Calgary, AB
Hello,

I hope that someone here might be able to provide an answer as to my issue.

Bike:
2017 V9 Bobber

Issue:
When I let off the throttle, it seems to chug for a moment and a large amount of vibrations occur. This doesn't seem to happen every time I let go of the throttle, more so when I let go suddenly rather than letting it down gently. This didn't occur before that trip on the rough road. Yes, suddenly letting off the throttle likely isn't good for the bike but it didn't seem to cause the bike any grief previously. Nothing appears to be loose on the bike. It might be the right exhaust the issue is occurring on, however it is difficult to tell for sure but that was my impression while sitting on the bike. When I let off the throttle gingerly I can mostly mitigate the problem.

Scenario:
The issue occurred last week, and might be related to me going on a rough road with the bike. While the bike isn't designed for it I wanted to take it on a gravel road in the nearby mountains. This road is about 60 KM long, and quite rough at points - full of potholes and washboard surfaces. At times, I'm sure I hit a few of these holes too fast and might be the reason for the issue.

Throttling up doesn't seem to have a negative affect, and it seems to have otherwise normal characteristics while riding. Familiar power and similar fuel economy. The day after the rough ride I took it on a trip about 600 KM total. I didn't really notice the issue until the last 50 KM or so of the trip, back when I got to the city. Most likely as I was riding consistently between 100-110 KM/H and gradually came to stops for most of the trip.

Anyway, I will likely be taking it to my local dealer next week, however I was hoping that someone here might be able to provide some insight into the issue. If you require more details, I will do my best to provide them.

Thanks in advance!

-Jeff
 
Where/How do you feel the vibrations?
IE: Handlebars shaking OR feel it thru the seat & up the back bone OR thru the foot pegs etc....

Is there a noise associated with the vibration?

How long does the vibration last?

What gear & what speed are you at when letting off the throttle?
 
Here's a short video with the issue audible.

As for how the vibrations feel it seems to be felt throughout the bike, believe it's the right exhaust. I pushed the exhausts around and while neither felt loose the noise was less present after. I'm going to take it for a short ride in a bit to see if it's any different and to provide better detail.

Side note: what's a good way to remove the warning stickers?
 
Sounds like one of the heat shield bolts is loose.
 
Hah, that was it, it's missing the bolt completely! I hadn't noticed it before, wasn't paying enough attention.

Thanks!

received_636982843455901.jpeg received_331020690900180.jpeg
 
Back
Top