Harley Davidson Forums

Touring Models Road King, Road King Custom, Road King Classic, Road Glide, Street Glide, Electra Glide, Electra Glide Classic, and Electra Glide Ultra Classic bikes.
Sponsored by:
Sponsored by:

Someone is knocking!

Thread Tools
 
Search this Thread
 
Old Jun 28, 2012 | 10:45 AM
Share
  #1  
Pumba11's Avatar
Pumba11
Thread Starter
|
Elite HDF Member
Joined: Jan 2007
Posts: 4,020
Likes: 69
From: Twin Cities, MN
Default Someone is knocking!
Just got back from a great 1,100 mile ride through the hills of SW Wisconsin.

On the last day I noticed, only at idle, a slight knocking sound from the engine. Not loud but certainly noticable. Kind of like when your car keeps running after you turn it off. Increase the RPM's and it disappears. Bike still performs flawlessly. But certainly it concerns me.

I had the HD hydralic conversion done and new cams. But no other motor work.

Any thoughts on what it could be?
 
Reply
0
Old Jun 28, 2012 | 12:40 PM
Share
  #2  
Delzore's Avatar
Delzore
Cruiser
Joined: Jan 2012
Posts: 132
Likes: 5
From: Mesa, Az
Default
Must have picked up a couple of Gremlins on that ride....
 
Reply
0
Old Jun 28, 2012 | 12:53 PM
Share
  #3  
dswansbiker's Avatar
dswansbiker
Road Warrior
15 Year Member
Joined: Nov 2006
Posts: 1,462
Likes: 121
From: Northern Illinois
Default
I would check primary chain tension.
 
Reply
0
Old Jun 28, 2012 | 01:26 PM
Share
  #4  
TUCCI's Avatar
TUCCI
Extreme HDF Member
Joined: Jun 2011
Posts: 10,216
Likes: 224
From: Glendale AZ
Default
If your oil pump is not circulating enough oil it will make a knocking sound like that. I would confirm the pressure is good then make sure theres no blockage anywhere.
 
Reply
0
Old Jun 28, 2012 | 04:58 PM
Share
  #5  
longrideshields-1's Avatar
longrideshields-1
Premium Sponsor
15 Year Member
Liked
Loved
Community Favorite
Joined: Jul 2009
Posts: 6,189
Likes: 95
From: Sparks NV
Default
It could be the girl scouts! They might be bringing you your cookies!
 
__________________

General Inquiries:
Info@LongRideShields.com
Sales and Marketing:
Sales@LongRideShields.com
Phone:
775.331.3789

Reply
0
Old Jun 28, 2012 | 06:04 PM
Share
  #6  
Pumba11's Avatar
Pumba11
Thread Starter
|
Elite HDF Member
Joined: Jan 2007
Posts: 4,020
Likes: 69
From: Twin Cities, MN
Default
LRS that there is funny! Thanks everyone else.
 
Reply
0
Old Jun 28, 2012 | 06:12 PM
Share
  #7  
kwo51's Avatar
kwo51
Outstanding HDF Member
Joined: Feb 2012
Posts: 3,046
Likes: 68
From: florida
Default
Thin mints please. Does it do it while hot?
 
Reply
0

Trending Topics

Old Jun 28, 2012 | 06:24 PM
Share
  #8  
Stiggy's Avatar
Stiggy
Seasoned HDF Member
15 Year Member
Liked
Loved
Community Favorite
Joined: Nov 2010
Posts: 17,548
Likes: 7,177
From: Oxford, Nc
Default
Maybe not from the engine but near it. Check the exhaust and shields, front motor mount, etc. ( Things that rattle more at low rpm's.)

Can you get more specific as the where/which side the sound is coming from?
 
Reply
0
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 Jun 28, 2012 | 06:26 PM
Share
  #9  
harleycharlie1992's Avatar
harleycharlie1992
Unofficial HDF Chaplain
15 Year Member
Liked
Top Answer: 3
Top Answer: 5
Joined: Dec 2009
Posts: 21,158
Likes: 18,080
From: san diego
Default
compensator bolt is coming loose
 
Reply
0
Old Jun 28, 2012 | 06:27 PM
Share
  #10  
FAUVDOG's Avatar
FAUVDOG
Cruiser
Joined: Oct 2009
Posts: 150
Likes: 3
Default
Not sure what ya ride but my sglide knocks after hot in neutral pull clutch in it goes away and i am told this is normal
 
Reply
0



Advanced Search
Reply Closed Thread Share
Forum Jump

All times are GMT -5. The time now is 03:19 PM.

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