Yanmar 2GMF fuel sheen from exhaust. - 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 > General Interest Forums > 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 05-15-2012
Junior Member
 
Join Date: May 2012
Posts: 2
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
grifftrad is on a distinguished road
Yanmar 2GMF fuel sheen from exhaust.

Hello there,
I have a 1984 Yanmar 2GMF that otherwise runs well without smoke. Upon launching today I noticed a sheen of either oil or fuel from the exhaust. There is no smoke, and the amount of sheen increases with increasing throttle. This is a freshwater cooled 2GMF. Thanks for looking!
Griffin
Reply With Quote Share with Facebook
  #2  
Old 05-15-2012
svHyLyte's Avatar
Old as Dirt!
 
Join Date: Nov 2008
Location: Tampa Bay Area
Posts: 2,338
Thanks: 11
Thanked 73 Times in 69 Posts
Rep Power: 6
svHyLyte is on a distinguished road
Re: Yanmar 2GMF fuel sheen from exhaust.

Quote:
Originally Posted by grifftrad View Post
Hello there,
I have a 1984 Yanmar 2GMF that otherwise runs well without smoke. Upon launching today I noticed a sheen of either oil or fuel from the exhaust. There is no smoke, and the amount of sheen increases with increasing throttle. This is a freshwater cooled 2GMF. Thanks for looking!
Griffin
When is the last time you adjusted the valves? We noticed a similar development with the 2GM20F on our prior yacht that was resolved once I adjusted the valves properly. It does need be done from time to time--every 500 hours if I recall correctly (but perhaps more often).

FWIW...
__________________
"It is not so much for its beauty that the sea makes a claim upon men's hearts, as for that subtle something, that quality of air, that emanation from the waves, that so wonderfully renews a weary spirit."
Reply With Quote Share with Facebook
  #3  
Old 05-15-2012
SlowButSteady's Avatar
Senior Slacker
 
Join Date: Feb 2010
Location: SoCal
Posts: 4,223
Thanks: 0
Thanked 17 Times in 15 Posts
Rep Power: 5
SlowButSteady is on a distinguished road
Re: Yanmar 2GMF fuel sheen from exhaust.

Does the sheen go away once the engine warms up? I've very occasionally noticed a very slight sheen from the exhaust of my boat's 2GM20 (RWC) when I first start it. But it goes away once the engine warms up. As far as I can tell it's just a little unburned fuel in the exhaust of the cold engine.
__________________
Never forget them. Do something to prevent it from happening again.
Charlotte Bacon, Daniel Barden, Rachel Davino, Olivia Josephine Gay, Ana M. Marquez-Greene, Dylan Hockley, Dawn Hochsprung, Madeleine F. Hsu, Catherine V. Hubbard, Chase Kowalski, Jesse Lewis, James Mattioli , Grace McDonnell, Anne Marie Murphy, Emilie Parker, Jack Pinto, Noah Pozner, Caroline Previdi, Jessica Rekos, Avielle Richman, Lauren Rousseau, Mary Sherlach, Victoria Soto, Benjamin Wheeler, Allison N. Wyatt

Last edited by SlowButSteady; 05-15-2012 at 04:32 PM.
Reply With Quote Share with Facebook
  #4  
Old 05-16-2012
Junior Member
 
Join Date: May 2012
Posts: 2
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
grifftrad is on a distinguished road
Re: Yanmar 2GMF fuel sheen from exhaust.

I'll try adjusting the valves, since the boat is new to me and I have no idea when it was last done. It seems to continue when the engine is warm. Thanks a lot.
Reply With Quote Share with Facebook
  #5  
Old 05-16-2012
smurphny's Avatar
Over Hill Sailing Club
 
Join Date: Feb 2009
Location: Adirondacks NY
Posts: 2,321
Thanks: 34
Thanked 37 Times in 36 Posts
Rep Power: 6
smurphny is on a distinguished road
Re: Yanmar 2GMF fuel sheen from exhaust.

It could be that it just needs a good run at 3000 rpm. The rings may need to reseat themselves after a lay-up.
__________________
Alberg 35: With a philosophical flourish Cato throws himself upon his sword; I quietly take to the ship.
Reply With Quote Share with Facebook
Reply

Tags
yanmar


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
Yanmar 2GMF starter solenoid mdemuth Gear & Maintenance 14 04-10-2013 08:46 PM
Yanmar 2GMF controls needed jarcher Gear & Maintenance 6 09-16-2010 09:54 AM
Yanmar 2GMF Transmission Oil? dacap06 Gear & Maintenance 4 04-19-2010 11:03 PM
Looking for a used Yanmar 2GMF or? captsam54 Diesel 0 08-09-2009 03:43 PM
zincs for Yanmar 2GMF Julie303 Gear & Maintenance 13 11-16-2007 02:00 PM


All times are GMT -4. The time now is 05:25 PM.

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