Detailing Discuss keeping your bike looking brand new here.

Correcting Stained Paint?

Thread Tools
 
Search this Thread
 
Old Mar 28, 2024 | 01:17 PM
  #1  
Dispatch's Avatar
Dispatch
Thread Starter
|
Stellar HDF Member
Veteran: Army
15 Year Member
Liked
Community Favorite
Joined: Apr 2008
Posts: 2,112
Likes: 647
From: Gettysburg, PA (For Now)
Question Correcting Stained Paint?

Already tried using Chemical Guys fine then moved up to medium clay to no avail but I still could not get the brown stains out of the paint:







The medium clay put a marring on the surface of the paint.

It almost looks like a brown coffee stain.

From actual experience, any suggestions?



 
Reply
Old Mar 29, 2024 | 08:25 AM
  #2  
Kenny94945's Avatar
Kenny94945
Stellar HDF Member
15 Year Member
Liked
Loved
Community Favorite
Joined: May 2007
Posts: 3,250
Likes: 515
From: USA
Default

Well, from you post, I'd assume "something" penetrated the clear cost (or single stage) paint.
I don't think claying will resolve.
Be prepared for a repaint.

My suggestion is to move up with a coarseness of polishing compound, and start with a sample area, perhaps in an un-noticeable area.
You may even need to use a machine polisher instead of hand (an applicator pad) polishing.

If that doesn't resolve, try 3000 (and move up to 1500 if need be) grit sandpaper then re-polish.
That great care not to sand through any clear coat paint.

I guess the question is how far that "something" penetrated into the paint.
Or perhaps it is not a penetration, but an issue with the metal surface and the stain is below the paint and seeping upward.

Good luck.
 
Reply
Old Mar 29, 2024 | 08:36 AM
  #3  
Uncle Larry's Avatar
Uncle Larry
Seasoned HDF Member
Veteran: Army
15 Year Member
Joined: Jan 2011
Posts: 157,324
Likes: 56,887
From: Michigan 15 Minutes East Of Hell
Default

3000 then 1500 ?
 
Reply
Old Mar 29, 2024 | 09:17 AM
  #4  
CaffeineBuzz's Avatar
CaffeineBuzz
Seasoned HDF Member
5 Year Member
Liked
Loved
Community Favorite
Joined: Jun 2019
Posts: 10,035
Likes: 10,766
From: SE Michigan
Default

maybe possible, but not super likely that the staining has penetrated the clear coat, but if somehow that is what is happening, there is no chemical that can correct this

if you don't have a machine polisher or know how to use one, you can at least check to see if this is on the surface of the clear coat

see if you can't find an obscure spot on the bike and do the following

wash it with a quality wash, nothing that leaves a wax or residue - Reset by Carpro
then chemically decontaminate the surface, iron remover, and a bug and tar remover....let them both dwell for a bit on the surface for a bit, but don't let em dry
clay barring always mars the surface....you don't use a clay bar to clean a surface, you use it to remove embedded particulates that could not be washed or dissolved in the decontamination process
when you are going to polish, you usually should clay bar first, but if you clay bar, you should always polish afterwards

now that it's clean

assuming you don't have a machine, you can test by hand polishing using a foam pad, and a light cutting polish to see if you can make a difference in the stain

take your time and hand polish, even if the polish you have is best used with a machine, this will work for test purposes....don't try and make make it perfect, you are simply hogging off a bit of your clear coat to see if the stain is deeper than on the surface of the clear coat, if you can see an obvious difference, and you think this will do it, you'll need to get it machine polished, or learn to do it yourself....hand polishing all of that is a job....and you'll never be able to do the work that a wheel spinning a googoojillion times a minute does
 
Reply
Old Mar 29, 2024 | 09:23 AM
  #5  
Crazy's Avatar
Crazy
Grand HDF Member
15 Year Member
Joined: Sep 2009
Posts: 4,540
Likes: 1,836
From: Albuquerque, NM
Default

Regarding the 3000 or any grit sandpaper: WET sand, do not dry sand.
 
Reply
Old Mar 29, 2024 | 04:51 PM
  #6  
Kenny94945's Avatar
Kenny94945
Stellar HDF Member
15 Year Member
Liked
Loved
Community Favorite
Joined: May 2007
Posts: 3,250
Likes: 515
From: USA
Default

Yes, I'd 3000 first, which takes of as little paint surface as possible.
If you needed to go deeper (remove more paint) then the 1500.
That's my .02.

Yet you could perhaps do it all with 3000, just more elbow grease and time.
Go slow, be patient when sanding.
And yes, important, wet sand.

Good luck.
 
Reply
Old Mar 31, 2024 | 01:39 PM
  #7  
Dispatch's Avatar
Dispatch
Thread Starter
|
Stellar HDF Member
Veteran: Army
15 Year Member
Liked
Community Favorite
Joined: Apr 2008
Posts: 2,112
Likes: 647
From: Gettysburg, PA (For Now)
Question Try Heavy Duty Clay?

Going the least aggressive in route first, maybe going up to trying CG heavy duty clay might do it?

I've never used clay on a heavy duty level, does anyone have any experience with it?
 
Reply
Old Mar 31, 2024 | 05:09 PM
  #8  
uncle kebo's Avatar
uncle kebo
Seasoned HDF Member
10 Year Member
Community Builder
Liked
Community Favorite
Joined: Oct 2013
Posts: 9,238
Likes: 5,784
From: On the Big Blue marble
Default

Stupid question, is it in the paint or could it be under the paint?
 
Reply
HD Forum Stories

The Best of Harley-Davidson for Lifelong Riders

story-0

7 Surprising Harley-Davidson Products that Are Not Motorcycles

 Verdad Gallardo
story-1

8 Best Harley-Davidson Motorcycles Ever

 Pouria Savadkouei
story-2

10 Worst Harley-Davidson Motorcycles Ever

 Pouria Savadkouei
story-3

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

 Verdad Gallardo
story-4

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

 Verdad Gallardo
story-5

Harley-Davidson Reveals Super Cool Cafe Racer Concept

 Verdad Gallardo
story-6

Engraved Rebellion: Inside Bundnerbike's Glam Rock II

 Verdad Gallardo
story-7

10 Motorcycles You Should Never Buy

 Joe Kucinski
story-8

10 Things Harley-Davidson Needs to Fix in 2026

 Verdad Gallardo
story-9

Southpaw Super Glide: A Left-Hand-Drive 1979 Harley FXE Built to Fit the Rider

 Verdad Gallardo
Old Mar 31, 2024 | 09:37 PM
  #9  
Dispatch's Avatar
Dispatch
Thread Starter
|
Stellar HDF Member
Veteran: Army
15 Year Member
Liked
Community Favorite
Joined: Apr 2008
Posts: 2,112
Likes: 647
From: Gettysburg, PA (For Now)
Default Not Sure...

Originally Posted by uncle kebo
Stupid question, is it in the paint or could it be under the paint?
I'm not sure, I would assume on top as I couldn't see it having occurred when it was being made at HD...
 
Reply
Old Apr 1, 2024 | 02:50 PM
  #10  
eaglefan1's Avatar
eaglefan1
Stellar HDF Member
10 Year Member
Liked
Loved
Community Favorite
Joined: Aug 2015
Posts: 3,425
Likes: 1,418
From: pensacola fl
Default

Clay is only going to remove contaminentts that are stuck to the paint. "Heavy" clay would be for some serious overspray.
Compounding looks like it will be needed now, its pretty marred up. Do you have a DA polisher?
 
Reply



All times are GMT -5. The time now is 03:41 PM.

story-0
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-1
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-2
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-3
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-4
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-5
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-6
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-7
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-8
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
story-9
Southpaw Super Glide: A Left-Hand-Drive 1979 Harley FXE Built to Fit the Rider

Slideshow: Graeme Billington's left-hand-drive Shovelhead is as much about problem-solving as it is about classic Harley form.

By Verdad Gallardo | 2025-12-30 11:27:08


VIEW MORE