Cruisers Forum
 


Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on Cruisers Forums. Advertise Here
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 02-03-2021, 22:15   #1
Registered User

Join Date: Jan 2017
Location: Key West
Boat: 1983 Dufour 12000 CT
Posts: 82
Need product recommendation to remove exhaust soot off painted hull

We painted our boat 2 years ago white.


We have very dirty diesel fuel.

Our raw water exhaust is 1/2 way forward on the side of our boat.

The 1/2 of the boat behind it is now covered in not so nice exhaust soot grayish doesnt-wipe-off-with-a-rag stuff.

Any tips to clean it up without killing paint job?

PS. We are fixing fuel issue next month during our haulout.
theglo is offline   Reply With Quote
Old 03-03-2021, 02:30   #2
Registered User

Join Date: Dec 2009
Location: Australia
Boat: building Roberts Mauritius 43ft
Posts: 2,610
Re: Need product recommendation to remove exhaust soot off painted hull

Can't help you. I did find a link that looks interesting,

How to remove exhaust stain
https://www.deckhanddetailing.com/de...nsom-and-stern
coopec43 is offline   Reply With Quote
Old 03-03-2021, 03:21   #3
Registered User
 
Simi 60's Avatar

Join Date: Jun 2016
Location: Australia
Boat: Milkraft 60 ex trawler
Posts: 3,216
Re: Need product recommendation to remove exhaust soot off painted hull

Jif or Gumption and elbow grease
Simi 60 is offline   Reply With Quote
Old 03-03-2021, 03:41   #4
Registered User
 
chrisr's Avatar

Join Date: Dec 2016
Location: Australia
Boat: Tasman 40' catamaran
Posts: 1,196
Re: Need product recommendation to remove exhaust soot off painted hull

Quote:
Originally Posted by Simi 60 View Post
Jif or Gumption and elbow grease
second that...

cheers,
__________________
"home is where the anchor drops"...stuck at Lake Mac for a while due to medical problems...heading north soon...
maintaining social distancing !
chrisr is offline   Reply With Quote
Old 03-03-2021, 10:22   #5
Registered User

Join Date: Apr 2005
Location: ME, TCI, On da boat
Boat: Pearson 323, Tayana V42CC
Posts: 725
Images: 1
Re: Need product recommendation to remove exhaust soot off painted hull

Clay bar or Mr Clean Magic Eraser.
Scubaseas is offline   Reply With Quote
Old 03-03-2021, 10:27   #6
Registered User
 
Peregrine1983's Avatar

Join Date: Aug 2016
Posts: 858
Re: Need product recommendation to remove exhaust soot off painted hull

I've had luck with Spray 9 degreaser and LOTS of elbow grease. It will require a few passes to get it off.

Also, in my experience, if you're getting a lot of diesel soot on your transom that usually has more to do with the motor than the fuel. The soot is partially burned fuel.

We get some soot if I really push our motor hard for a long time - especially with a following breeze blowing it back against the transom.
Peregrine1983 is offline   Reply With Quote
Old 03-03-2021, 10:35   #7
Registered User

Join Date: Jan 2020
Location: Sweden
Boat: Swan 57
Posts: 83
Re: Need product recommendation to remove exhaust soot off painted hull

Autosol works very well, as would any gentle rubbing compound. In the Car Care shelf
Hermia II is offline   Reply With Quote
Old 03-03-2021, 10:50   #8
Registered User

Join Date: Aug 2020
Location: Naples
Boat: Tiara 4400 49.5
Posts: 4
Re: Need product recommendation to remove exhaust soot off painted hull

I use FSR, also cleans fiberglass swim platform well!
Dallas Bell is offline   Reply With Quote
Old 03-03-2021, 10:51   #9
Registered User

Join Date: Apr 2019
Boat: 1988 Sunward 48' Ketch
Posts: 60
Re: Need product recommendation to remove exhaust soot off painted hull

Two products we’ve tried that work quick and easy every time:
- Mary Kates On & Off
- Boat Goat Scrub

Wet surface. Apply product. Wait a minute or two. Rinse. Light scrubbing with a soft brush, sponge, swab, or rag sometimes required.
dlane1181 is offline   Reply With Quote
Old 03-03-2021, 10:53   #10
Registered User
 
Nord Sal's Avatar

Join Date: Sep 2014
Location: POW Alaska
Boat: Trlåren, Saltjö Dunväs, Sweden
Posts: 96
Re: Need product recommendation to remove exhaust soot off painted hull

Magic eraser worked well for me for cleaning sooty stains.
Nord Sal is offline   Reply With Quote
Old 03-03-2021, 11:02   #11
Registered User

Join Date: Oct 2019
Posts: 311
Re: Need product recommendation to remove exhaust soot off painted hull

I think that Jif will take the shine off.
Stewie12 is offline   Reply With Quote
Old 03-03-2021, 11:04   #12
Registered User

Join Date: Apr 2005
Location: ME, TCI, On da boat
Boat: Pearson 323, Tayana V42CC
Posts: 725
Images: 1
Re: Need product recommendation to remove exhaust soot off painted hull

All good suggestions here Wax the hull well after you clean it. It will make future cleanings a lot easier. I like pure carnuba wax applied with a lamb's wool on a polisher but Collinite works well also.
Scubaseas is offline   Reply With Quote
Old 03-03-2021, 11:19   #13
Registered User

Join Date: Sep 2011
Location: Bristol, Rhode Island
Boat: Catalina 320
Posts: 35
Re: Need product recommendation to remove exhaust soot off painted hull

I've fastened a short plastic tube to the engine-exhaust port. One to two inches or so. Creates a bit of a chimney and helps prevent soot stains.
Sailnav is offline   Reply With Quote
Old 03-03-2021, 11:30   #14
Registered User
 
Sailor647's Avatar

Join Date: Feb 2013
Location: Cruising Mexico
Boat: Norseman 400
Posts: 353
Re: Need product recommendation to remove exhaust soot off painted hull

Tilex Mold and Mildew Remover works like magic for removing exhaust stains on a painted hull. We used it all the time until we dialed in the engine and eliminated the exhaust smoke. Spray it on, wipe gently with a severely worn out green scrub pad, or something that won't scratch the paint. Then rinse with fresh water.

After it's clean, polish with SeaPower boat cleaner and wax.

Our Westerbeke 46 was smoking because the air intake was too small. Once we opened that up, no more smoke.

Tilex also works on removing stains from Formica or gelcoat in the galley. But be careful when you spray it. It will bleach clothing and dish towels.
Attached Thumbnails
Click image for larger version

Name:	Tilex.JPG
Views:	25
Size:	36.3 KB
ID:	233739   Click image for larger version

Name:	SeaPower.JPG
Views:	30
Size:	30.8 KB
ID:	233740  

Sailor647 is offline   Reply With Quote
Old 03-03-2021, 11:31   #15
Senior Cruiser
 
kmcshane's Avatar

Cruisers Forum Supporter

Join Date: Jul 2010
Location: Biscayne Bay, Florida, USA
Boat: Ted Brewer, Bulldog 30' built in aluminum
Posts: 107
Re: Need product recommendation to remove exhaust soot off painted hull

I tried Ajax, Bar Keepers Friend, Clorox, Booyah,...nothing but elbow grease until I tried Mary Kate's On and Off.
I have an aluminum hull in the water, but it's painted, and the white boot stripe is painted over that. So I felt a bit safer using this...must be an acid like hydrochloric or muriatic.

I put some On and Off in the Booyah empty spray bottle (be careful to wear eye protection) and gave it a test.

OMG, started working immediately on the boot stripe slime and the discoloration. Don't know about the black soot, but I'd say it's likely.


https://www.westmarine.com/buy/maryk...-quart--127961
kmcshane is offline   Reply With Quote
Reply

Tags
exhaust, hull, men, paint

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
How to remove 8"wide painted stripes on 19' boat Snowdog2 Construction, Maintenance & Refit 8 28-09-2020 14:55
How Do I Remove a Painted on Stripe BlueChicago Construction, Maintenance & Refit 11 11-10-2017 15:08
How to Remove Diesel Soot from Painted Surface? James Plyler Monohull Sailboats 3 21-08-2012 16:53
Copper Wet Exhaust Soot Cleaning? Oatman Construction, Maintenance & Refit 6 28-02-2010 15:11
Yanmar issues... white smoke and black oily soot (exhaust) and engine smoke CS27 Engines and Propulsion Systems 3 14-09-2008 17:40

Advertise Here


All times are GMT -7. The time now is 14:07.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2021, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2021, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.