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Buzzing on acceleration

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Old Oct 6, 2019 | 09:58 PM
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Foretwoone
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Default Buzzing on acceleration

Sorry if this has been covered before but I did a search and couldn’t find anything. I have a 2016 FXDL with 2500 miles. Bought it about 3 weeks ago with 1500 miles and all was good. In the last few days I noticed a pronounced buzz on acceleration between 2500-2800 rpms. It doesn’t feel motor related. It’s so hard to tell when riding but it sounds like it’s coming from the front of the handlebars. Just to be safe I tightened everything I could think of.... exhaust, air cleaner, headlight, front motor mount, mirrors, horn, and the little clips holding the lines in place. Checked the license plate and bracket as well as the seat screw. Still buzzes. Anything I’m missing that it could be?
Also not sure if it’s related but the metal L pieces under the throttle for the throttle cable and return cable are loose. Should these have a lot of play?
 
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Old Oct 7, 2019 | 11:57 AM
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Did you check the tank mounting bolts?
 
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Old Oct 7, 2019 | 12:33 PM
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Foretwoone
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Originally Posted by nevil
Did you check the tank mounting bolts?
Only the front one. I couldn’t see where the rear bolt was at.
 
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Old Oct 7, 2019 | 09:56 PM
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Under the seat...but you’ve only had the bike 3 weeks....how much do you know about Harley’s, about mechanics?

From experience, they shake, they shake a lot. They make noise, sometimes they make a lot of noise...

If your going to pull your hair out over every little sound....good luck with that.

My bikes sound different depending on what helmet I’m wearing...or how the wind blows...

but if your bent on finding it, while it’s running start touching the bike to see if any spot stops the noise....

if all else fails, it’s your front motor mount...
 
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Old Oct 8, 2019 | 02:20 AM
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Graham UK
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Originally Posted by Foretwoone
Sorry if this has been covered before but I did a search and couldn’t find anything. I have a 2016 FXDL with 2500 miles. Bought it about 3 weeks ago with 1500 miles and all was good. In the last few days I noticed a pronounced buzz on acceleration between 2500-2800 rpms. It doesn’t feel motor related. It’s so hard to tell when riding but it sounds like it’s coming from the front of the handlebars. Just to be safe I tightened everything I could think of.... exhaust, air cleaner, headlight, front motor mount, mirrors, horn, and the little clips holding the lines in place. Checked the license plate and bracket as well as the seat screw. Still buzzes. Anything I’m missing that it could be?
Also not sure if it’s related but the metal L pieces under the throttle for the throttle cable and return cable are loose. Should these have a lot of play?
When a metallic buzz appeared on my bike at certain revs it turned out to be the heat shields on the exhaust coming loose, such that the flanges at the bottom of the front and rear down-pipe shields were vibrating together where they disappear behind the main heat shield. A jubilee clip around the flanges on those shields and the pipe cured the buzz, and is hidden behind the main shield.
 
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