Diesel Smell - SailNet Community

   Search Sailnet:

 forums  store  


Quick Menu
Forums           
Articles          
Galleries        
Boat Reviews  
Classifieds     
Search SailNet 
Boat Search (new)

Shop the
SailNet Store
Anchor Locker
Boatbuilding & Repair
Charts
Clothing
Electrical
Electronics
Engine
Hatches and Portlights
Interior And Galley
Maintenance
Marine Electronics
Navigation
Other Items
Plumbing and Pumps
Rigging
Safety
Sailing Hardware
Trailer & Watersports
Clearance Items

Advertise Here






Go Back   SailNet Community > On Board > Gear & Maintenance > Engines > Diesel
 Not a Member? 

Diesel This is a new forum dedicated to diesel engines and their applicable accessories.


Reply
 
LinkBack Thread Tools
  #1  
Old 10-14-2013
Dave_E's Avatar
Senior Member
 
Join Date: Aug 2013
Location: Everett, WA
Posts: 460
Thanks: 18
Thanked 15 Times in 15 Posts
Rep Power: 1
Dave_E is on a distinguished road
Diesel Smell

Hi All,

As I've mentioned before, diesel ownership on a sailboat is new to me. I've smelled/inhaled plenty of diesel exhaust in my day, (used to work at heavy duty truck dealerships and truck stops as a lad).

My 34 year old Universal 5424 with 3317.3 hours, starts up from cold... (30 seconds on the glow plugs) - no sweat. Warm engine... starts right up. Hits 2800 top RPM good and idles at 550-600 smoothly. No black smoke, exhaust is thin and fairly colorless with good water flow (fresh water cooled).

Here's the deal. At RPM's less than around 2100... smells like diesel to me, but get on it hard and you get that "somethings cooking" smell. It so alarmed me last week that I throttled back to look for problems. No change in exhaust color or density, oil pressure OK (no light), temp hovering around 150. It does this every time. Something I should be concerned about? Any thoughts or suggestions? Thanks as always.

Dave
__________________
Allmand Sail 31 #15 "Traveler"
GOD, Family, career
Reply With Quote Share with Facebook
  #2  
Old 10-14-2013
Faster's Avatar
Just another Moderator
 
Join Date: Sep 2005
Location: New Westminster, BC
Posts: 14,603
Thanks: 67
Thanked 178 Times in 174 Posts
Rep Power: 10
Faster has a spectacular aura about Faster has a spectacular aura about Faster has a spectacular aura about
Re: Diesel Smell

We had a pervasive exhaust odour below a while back, despite numerous 'visual' inspections was unable to determine the source.

In the end I decided to remove and inspect the exhaust elbow. While scraping a 'little' surface rust the tool went right through it! While it appeared 'whole' turns out it had corroded to the point that it was porous. Built a new one out of SS and no issues since.

Given the mixing of salt water, elevated temperature, thermal shock etc involved here it's not surprising that this is where the worst corrosion will occur, not to mention simple carbon buildup.
__________________
Ron

1984 Fast/Nicholson 345 "FastForward"

".. there is much you could do at sea with common sense.. and very little you could do without it.."
Capt G E Ericson (from "The Cruel Sea" by Nicholas Monsarrat)
Reply With Quote Share with Facebook
  #3  
Old 10-14-2013
T37Chef's Avatar
Senior Member
 
Join Date: Oct 2006
Location: Maryland
Posts: 4,018
Thanks: 46
Thanked 24 Times in 23 Posts
Rep Power: 8
T37Chef will become famous soon enough
Re: Diesel Smell

Sounds like a leak, maybe an injector or injector pump. Might be time to rebuild that pump?

Hard to say. Dry rag and rub it around the engine and see if you smell diesel.
__________________
Shawn
Tartan 37 - S/V Windgeist
Sailing the Chesapeake Bay


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Photo by Joe McCary
Reply With Quote Share with Facebook
  #4  
Old 10-14-2013
Dave_E's Avatar
Senior Member
 
Join Date: Aug 2013
Location: Everett, WA
Posts: 460
Thanks: 18
Thanked 15 Times in 15 Posts
Rep Power: 1
Dave_E is on a distinguished road
Re: Diesel Smell

The smell is from the exhaust. No leakage anywhere around the motor, oil, water or fuel. Doesn't smell like burning rubber, but will take a look at the exhaust path (amazingly long).

Dave
__________________
Allmand Sail 31 #15 "Traveler"
GOD, Family, career
Reply With Quote Share with Facebook
  #5  
Old 10-14-2013
Irrationally Exuberant
 
Join Date: Jul 2007
Location: Northern Virginia
Posts: 1,299
Thanks: 6
Thanked 6 Times in 6 Posts
Rep Power: 7
arf145 is on a distinguished road
Re: Diesel Smell

With my last boat I'm pretty sure I had the situation Faster describes, except that I was a little too clueless to look closely at the exhaust coupling when I kept smelling diesel. The elbow looked perfect. When the coupling broke one day (lots of drama), I was able to see that the coupling had many small perforations that were no doubt leaking before the dramatic end. Worth a check!
__________________
Tom K

2000 Beneteau 331
Northern Chesapeake Bay

Ambition is a poor excuse for not having enough sense to be lazy ~ Steven Wright
Reply With Quote Share with Facebook
  #6  
Old 10-14-2013
Senior Member
 
Join Date: May 2011
Location: Bangor, Maine
Posts: 127
Thanks: 0
Thanked 2 Times in 2 Posts
Rep Power: 4
seaner97 is on a distinguished road
Diesel Smell

Just replaced my exhaust elbow- same issue. Damn thing split in two when I went to inspect it.
Reply With Quote Share with Facebook
  #7  
Old 10-15-2013
Faster's Avatar
Just another Moderator
 
Join Date: Sep 2005
Location: New Westminster, BC
Posts: 14,603
Thanks: 67
Thanked 178 Times in 174 Posts
Rep Power: 10
Faster has a spectacular aura about Faster has a spectacular aura about Faster has a spectacular aura about
Re: Diesel Smell

Quote:
Originally Posted by Dave_E View Post
The smell is from the exhaust. No leakage anywhere around the motor, oil, water or fuel. Doesn't smell like burning rubber, but will take a look at the exhaust path (amazingly long).

Dave


Dave E... to be clear, we're talking about the last fitting before it goes to hose, just where the cooling water mixes with the exhaust stream. Of course it's also possible you have a leaky connection at the muffler or elsewhere, but a water leak will usually accompany a problem there since the exhaust is wet by that time.

The elbow is usually right off the exhaust manifold, with a smaller water line connected to the side that takes your RW cooling water and injects it back into the exhaust to cool and quiet it.
__________________
Ron

1984 Fast/Nicholson 345 "FastForward"

".. there is much you could do at sea with common sense.. and very little you could do without it.."
Capt G E Ericson (from "The Cruel Sea" by Nicholas Monsarrat)
Reply With Quote Share with Facebook
  #8  
Old 10-15-2013
Senior Member
 
Join Date: Feb 2010
Location: Narragansett Bay
Posts: 8,632
Thanks: 10
Thanked 110 Times in 105 Posts
Rep Power: 6
Minnewaska will become famous soon enough Minnewaska will become famous soon enough
Re: Diesel Smell

Do you have an engine compartment blower that exits near the exhaust?
__________________

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Jeanneau 54DS

In the harsh marine environment, something is always in need of repair. Margaritas fix everything.
Reply With Quote Share with Facebook
  #9  
Old 10-15-2013
Dave_E's Avatar
Senior Member
 
Join Date: Aug 2013
Location: Everett, WA
Posts: 460
Thanks: 18
Thanked 15 Times in 15 Posts
Rep Power: 1
Dave_E is on a distinguished road
Re: Diesel Smell

Thanks Faster, I'll look there first. Going to the boat tonight.

I have a blower... pick up is near the bottom of the engine bildge, don't use it much, it's never on after the engine is running.
__________________
Allmand Sail 31 #15 "Traveler"
GOD, Family, career
Reply With Quote Share with Facebook
  #10  
Old 10-19-2013
Member
 
Join Date: Jun 2013
Posts: 48
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
Osprey 26 is on a distinguished road
Re: Diesel Smell

Here's the deal. At RPM's less than around 2100... smells like diesel to me, but get on it hard and you get that "somethings cooking" smell. It so alarmed me last week that I throttled back to look for problems. No change in exhaust color or density, oil pressure OK (no light), temp hovering around 150. It does this every time. Something I should be concerned about? Any thoughts or suggestions? Thanks as always.

As you described 150 is not warm enough for Diesel Engine. Should be around 180, and it takes time to get there. Any oil on the block from last oil change, and possible couple drops spilled on top of it?
Reply With Quote Share with Facebook
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

 
Posting Rules
You may post new threads
You may post replies
You may post attachments
You may edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Remove Diesel Smell capsss Gear & Maintenance 9 07-08-2012 05:05 PM
Any good diesel smell solutions teflongeoff Cruising & Liveaboard Forum 18 06-12-2011 06:40 AM
Diesel smell in clothes brokesailor General Discussion (sailing related) 17 11-15-2010 07:29 AM
Diesel Smell After Spill labestia Gear & Maintenance 12 07-31-2009 12:30 PM
That Diesel Smell Mark Matthews Gear and Maintenance Articles 0 08-27-2001 08:00 PM


All times are GMT -4. The time now is 03:33 AM.

Add to My Yahoo!         
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
SEO by vBSEO 3.6.1
(c) Marine.com LLC 2000-2012