2018+ Softail Models Breakout

2018 Fatbob gas cap rattles

Thread Tools
 
Search this Thread
 
Old Mar 22, 2018 | 12:42 AM
  #1  
Gremski's Avatar
Gremski
Thread Starter
|
Intermediate
Joined: Sep 2017
Posts: 36
Likes: 1
From: Orange County
Default 2018 Fatbob gas cap rattles

I love my 18' Fatbob, but the gas cap rattles (vibrates) when I accelerate. It's pretty noisy, mixes with the engine sound in an annoying way. Wondering if anyone else has experienced this and found an easy fix? I try tightening it, adjusting it, etc. but can't get rid o' the rattle. Would replace if I could find one that matches my industrial grey.
 
Reply
Old Mar 22, 2018 | 03:54 AM
  #2  
blackSP's Avatar
blackSP
Tourer
Joined: Dec 2012
Posts: 405
Likes: 30
From: Amsterda
Default

Can you explain better what part it is that rattles? I haven't heard anything (yet)
 
Reply
Old Mar 22, 2018 | 04:48 AM
  #3  
DrPlastic's Avatar
DrPlastic
Outstanding HDF Member
Joined: Oct 2007
Posts: 2,398
Likes: 34
From: Newport news, Virginia
Default

My '16 break out does this also. And yes it is correctly installed. It only goes on one way. I hear it and can see it s it will also rotate a bit. I know it is the cap as when I put my hand on it it stops. I have been told that this is normal. I plan on installing a chrome flush mount, pop up one later this year.
 
Reply
Old Mar 22, 2018 | 06:18 AM
  #4  
Prot's Avatar
Prot
Club Member
Veteran: Navy
15 Year Member
Liked
Community Favorite
Joined: Aug 2008
Posts: 22,861
Likes: 17,917
From: Lafayette, Louisiana
Riders Club Member
Default

Originally Posted by DrPlastic
My '16 break out does this also. And yes it is correctly installed. It only goes on one way. I hear it and can see it s it will also rotate a bit. I know it is the cap as when I put my hand on it it stops. I have been told that this is normal. I plan on installing a chrome flush mount, pop up one later this year.
It's not normal. Even the OEM caps on my old bike don't rattle and my engine is solid mounted with no counter balance shafts.

I have replaced them with pop ups just for improved appearance.
 
Reply
Old Mar 22, 2018 | 08:24 AM
  #5  
SgtThump's Avatar
SgtThump
Road Warrior
Joined: Sep 2007
Posts: 1,993
Likes: 57
From: St. Louis, MO
Default

Ive read more than one post on here about the gas cap rattling on the new FatBob. Mine doesn’t yet, but it seems to happen.

Believe the other posters that had this issue had the gas cap replaced under warranty, believe it or not.
 
Reply
Old Mar 22, 2018 | 09:31 AM
  #6  
Decker72's Avatar
Decker72
Cruiser
Joined: Sep 2012
Posts: 207
Likes: 60
From: North Georgia
Default

I had the same issue on my Fat Bob ... annoying as hell. It was warrantied without question by my local dealer.
 
Reply
Old Mar 22, 2018 | 10:59 AM
  #7  
FatBob2018's Avatar
FatBob2018
Grand HDF Member
5 Year Member
Liked
Loved
Community Favorite
Joined: Nov 2017
Posts: 4,251
Likes: 3,134
From: Texas
Default

Yep, I had that exact issue, it'd buzz like an angry hornet at 2500 rpms. They replaced it under warranty.
 
Reply
Old Mar 22, 2018 | 11:35 AM
  #8  
Sidefire's Avatar
Sidefire
Novice
Joined: Oct 2017
Posts: 18
Likes: 2
From: US
Default

Mine didn't.... Until I went stage 2. Now its pretty annoying. Ill check if they will cover it under warranty, that would be awesome.
 
Reply
HD Forum Stories

The Best of Harley-Davidson for Lifelong Riders

story-0

7 Times Harley-Davidson Chucked Tradition Out the Window

 Verdad Gallardo
story-1

7 Surprising Harley-Davidson Products that Are Not Motorcycles

 Verdad Gallardo
story-2

8 Best Harley-Davidson Motorcycles Ever

 Pouria Savadkouei
story-3

10 Worst Harley-Davidson Motorcycles Ever

 Pouria Savadkouei
story-4

Killer Custom's Jail Break Is The Breakout That Refused to Blend In

 Verdad Gallardo
story-5

Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?

 Verdad Gallardo
story-6

Harley-Davidson Reveals Super Cool Cafe Racer Concept

 Verdad Gallardo
story-7

Engraved Rebellion: Inside Bundnerbike's Glam Rock II

 Verdad Gallardo
story-8

10 Motorcycles You Should Never Buy

 Joe Kucinski
story-9

10 Things Harley-Davidson Needs to Fix in 2026

 Verdad Gallardo
Old Mar 22, 2018 | 11:37 PM
  #9  
Gremski's Avatar
Gremski
Thread Starter
|
Intermediate
Joined: Sep 2017
Posts: 36
Likes: 1
From: Orange County
Default

Thanks for the replies.

@BlackSP - not sure which part of the cap rattles, but when I lay my hand on it lightly while riding, it stops the rattle.

Good to know that it's under warrenty. Will call me dealer in the morning.
 
Reply
Old Mar 31, 2018 | 08:34 PM
  #10  
Gremski's Avatar
Gremski
Thread Starter
|
Intermediate
Joined: Sep 2017
Posts: 36
Likes: 1
From: Orange County
Default

Well a happy ending -

Stopped by my local dealer today and swapped out the gas cap with a new one for free thanks to the warrenty. No buzz during the ride home.
 
Reply



All times are GMT -5. The time now is 01:38 AM.

story-0
7 Times Harley-Davidson Chucked Tradition Out the Window

Slideshow: Harley-Davidson built its reputation on nostalgia, but every so often, the company took a hard left turn into the future.

By Verdad Gallardo | 2026-05-20 11:18:19


VIEW MORE
story-1
7 Surprising Harley-Davidson Products that Are Not Motorcycles

Slideshow: The bar-and-shield logo shows up on far more than motorcycles, some of the company's most unexpected products have nothing to do with riding.

By Verdad Gallardo | 2026-04-29 16:50:35


VIEW MORE
story-2
8 Best Harley-Davidson Motorcycles Ever

Slideshow: Not every Harley gets it right, but these are the ones that genuinely earned their reputation.

By Pouria Savadkouei | 2026-04-15 14:23:21


VIEW MORE
story-3
10 Worst Harley-Davidson Motorcycles Ever

Slideshow: From the troubled AMF years to modern misfires, these bikes earned reputations for reliability issues, questionable engineering, or disappointing performance.

By Pouria Savadkouei | 2026-04-01 20:01:09


VIEW MORE
story-4
Killer Custom's Jail Break Is The Breakout That Refused to Blend In

Slideshow: Killer Custom's "Jail Breaker" build focuses more on stance and visual aggression than mechanical overhaul.

By Verdad Gallardo | 2026-03-18 19:20:32


VIEW MORE
story-5
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?

Slideshow: The Swiss custom shop has taken a Harley Softail and stretched it into something so long and low that it looks closer to a rolling sculpture than a conventional motorcycle.

By Verdad Gallardo | 2026-03-07 16:15:30


VIEW MORE
story-6
Harley-Davidson Reveals Super Cool Cafe Racer Concept

Slideshow: Harley-Davidson's new RMCR concept revives the café racer formula with modern hardware-and it may be exactly the reset the company needs.

By Verdad Gallardo | 2026-03-04 12:23:37


VIEW MORE
story-7
Engraved Rebellion: Inside Bundnerbike's Glam Rock II

Slideshow: A standard cruiser becomes an intricate metal canvas in the hands of a Swiss custom house known for pushing Harley-Davidson platforms far beyond their factory brief.

By Verdad Gallardo | 2026-02-24 18:19:44


VIEW MORE
story-8
10 Motorcycles You Should Never Buy

Slideshow: There is no shortage of great motorcycles to buy, but we would avoid these ten.

By Joe Kucinski | 2026-02-19 14:50:51


VIEW MORE
story-9
10 Things Harley-Davidson Needs to Fix in 2026

Slideshow: Harley-Davidson's challenges aren't abstract; they show up in dropping shipments, shrinking dealer traffic, and strategic decisions that aren't yet translating into growth.

By Verdad Gallardo | 2026-01-13 18:33:17


VIEW MORE