Sportster Models 883, 883 Custom, 1200 Custom, 883L, 1200L, 1200S, 1200 Roadster, XR1200, and the Nightster.
Sponsored by:
Sponsored by:

Knocking noise from motor

Thread Tools
 
Search this Thread
 
Old Feb 16, 2014 | 11:45 AM
  #1  
Zackd's Avatar
Zackd
Thread Starter
|
Stage II
Joined: Feb 2014
Posts: 2
Likes: 0
From: Ok
Default Knocking noise from motor

I need some help! I recently changed out my stock AC kit for a Kurankyn Mach2 co-ax kit and rejetted the carb with a stage 1 kit on my 05 883C. Installation went okay, took a little while because I'm new to working on my bike. Started it up and now there is a knocking noise in the motor that was not there before install. Does any one have any suggestions on what to do?
Thanks
 
Reply
Old Feb 16, 2014 | 11:53 AM
  #2  
Sikk50's Avatar
Sikk50
Road Master
Joined: Mar 2011
Posts: 899
Likes: 2
From: Ojai, Ca
Default

Does it sound like a sewing machine?
 
Reply
Old Feb 16, 2014 | 12:26 PM
  #3  
John Harper's Avatar
John Harper
HDF Community Team
10 Year Member
Joined: Dec 2011
Posts: 8,609
Likes: 4,048
From: San Diego, CA
Community Team
Default

Noises are so hard to diagnose, much less describe. Have you checked for intake leaks, exhaust leaks, fuel tank mount bolts.

With non-stock aircleaner, your bike will make some new noises, new NORMAL noises. Mine sure did with AC and slipons. Better noises IMO.

John
 
Reply
Old Feb 16, 2014 | 10:49 PM
  #4  
run1fsr's Avatar
run1fsr
Outstanding HDF Member
Joined: Oct 2007
Posts: 2,114
Likes: 67
From: USA
Default

None of that should cause a knock provided you dropped nothing in the engine.
 
Reply
Old Feb 16, 2014 | 11:26 PM
  #5  
06Sporty75's Avatar
06Sporty75
Road Captain
Joined: Sep 2011
Posts: 725
Likes: 3
From: Hagerstown, MD
Default

sorry about your problem,, I'm of no help,, but for future reference,,

this is why its best to take it to a trained professional in the first place,, save yourself the aggravation and time and possible damage or being stranded on the road. Any shop would have only charged you about $100 to install all of that..
 
Reply
Old Feb 17, 2014 | 09:16 AM
  #6  
Scrambler900's Avatar
Scrambler900
Road Captain
Joined: May 2013
Posts: 525
Likes: 9
From: Brooklyn
Default

Originally Posted by 06Sporty75
sorry about your problem,, I'm of no help,, but for future reference,,

this is why its best to take it to a trained professional in the first place,, save yourself the aggravation and time and possible damage or being stranded on the road. Any shop would have only charged you about $100 to install all of that..
What he said. I love it when a customer brings something in that they "tried" to do themselves and made it way worse and more expensive.
 
Reply
Old Feb 17, 2014 | 10:11 AM
  #7  
John Harper's Avatar
John Harper
HDF Community Team
10 Year Member
Joined: Dec 2011
Posts: 8,609
Likes: 4,048
From: San Diego, CA
Community Team
Default

Looks like some "tough love guys" are on the forum today. Seriously, if all you did was change that superficial stuff, you should not have caused any problems. The stock AC probably muffled a lot of engine noise.

John
 
Reply
Old Feb 17, 2014 | 11:08 AM
  #8  
OldSchoolZ's Avatar
OldSchoolZ
Cruiser
Joined: Aug 2011
Posts: 156
Likes: 1
From: Omaha
Default

Make sure the bolts you mounted the air cleaner with have holes in them so air can pass through.
 
Reply
HD Forum Stories

The Best of Harley-Davidson for Lifelong Riders

story-0

Harley-Davidson Fat Boy Becomes a Dark, Decepticon-Inspired Custom

 Verdad Gallardo
story-1

6 Weirdest Harley-Davidsons Ever Sold to the Public

 Verdad Gallardo
story-2

7 Times Harley-Davidson Chucked Tradition Out the Window

 Verdad Gallardo
story-3

7 Surprising Harley-Davidson Products that Are Not Motorcycles

 Verdad Gallardo
story-4

8 Best Harley-Davidson Motorcycles Ever

 Pouria Savadkouei
story-5

10 Worst Harley-Davidson Motorcycles Ever

 Pouria Savadkouei
story-6

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

 Verdad Gallardo
story-7

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

 Verdad Gallardo
story-8

Harley-Davidson Reveals Super Cool Cafe Racer Concept

 Verdad Gallardo
story-9

Engraved Rebellion: Inside Bundnerbike's Glam Rock II

 Verdad Gallardo
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Grappa
Touring Models
2
Jul 2, 2015 03:48 PM
devlin1963
Touring Models
0
May 12, 2014 05:37 AM
Zackd
Ignition/Tuner/ECM/Fuel Injection
0
Feb 15, 2014 07:22 PM
98wideglide95632
Dyna Glide Models
0
Jul 17, 2011 09:38 AM
THUMPERRRR
Primary/Transmission/Driveline/Clutch
2
Jun 25, 2007 12:04 AM




All times are GMT -5. The time now is 03:01 PM.

story-0
Harley-Davidson Fat Boy Becomes a Dark, Decepticon-Inspired Custom

Slideshow: Killer Custom's latest build relies on styling changes rather than performance upgrades, giving the cruiser an entirely different personality.

By Verdad Gallardo | 2026-06-03 18:28:05


VIEW MORE
story-1
6 Weirdest Harley-Davidsons Ever Sold to the Public

Slideshow: From military-inspired singles to scooters and three-wheel utility vehicles, these Harleys took the company far outside its comfort zone.

By Verdad Gallardo | 2026-06-02 18:34:10


VIEW MORE
story-2
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-3
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-4
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-5
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-6
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-7
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-8
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-9
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