reduced exhaust water - 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 > Boat Builders Row > Pacific Seacraft
 Not a Member? 


Reply
 
LinkBack Thread Tools
  #1  
Old 07-26-2007
Junior Member
 
Join Date: Feb 2002
Posts: 4
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
rsford is on a distinguished road
reduced exhaust water

Any ideas about cleaning out the Yanmar diesel heat exchanger on a PSC 37? When the engine is running, seawater still come out the exhust, but it's a lot smaller volume than formerly. I've cleaned out the thru-hull for the seawater intake as well as the seawater strainer. With the seawater pump cover off and the intake line open, seawater flows out freely at the open pump. I've also replaced the seawater pump impeller even though the old one looked fine.

I'm concerned that, despite the above actions, the volume of exhaust water remains diminished, even though the engine has not yet over- heated. In case marine growth built up during a period of disuse, I've wondered about pumping Liquid Plummer into the seawater inlet of the exhanger for a little while and then flushing it out. Removing the heat exhanger looks like rather serious engine work to me, so I was hoping for a simpler fix. Thanks.

Bob Ford
s/v Talos IV, 1995 PSC 37 #306
Reply With Quote Share with Facebook
  #2  
Old 07-26-2007
camaraderie's Avatar
moderate?
 
Join Date: May 2002
Location: East Coast
Posts: 13,877
Thanks: 0
Thanked 3 Times in 3 Posts
Rep Power: 15
camaraderie is a jewel in the rough camaraderie is a jewel in the rough camaraderie is a jewel in the rough
First step is making sure you have full flow of water between the through hull and the perko filter. Often barnacles, kelp, plastic can restrict water flow. Liquid plumber won't help...but often a dive overboard with a long screwdriver and/or coathanger can dislodge whatever is restricting the flow.
If that is not the problem...and you think the impeller is good...check the flow by removing the connecting hose for a few seconds with the engine running. If that check out...it is on to the heat exchanger I'm afraid but it is NOT that difficult a job. Alternatively to removing the exchanger if you are pretty sure the blockage is NOT a piece of impeller...is to use muriatic acid solution at the engine intake and let it run through until you see it coming out the exhaust...let it sit for a few minutes and then flush it thorugh by running the engine normally. That will often clear the pipes. Otherwise they need to be reamed out physically.
Good luck.
Reply With Quote Share with Facebook
  #3  
Old 07-27-2007
Owner, Green Bay Packers
 
Join Date: Sep 2006
Location: SW Michigan
Posts: 10,318
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 12
sailaway21 is just really nice sailaway21 is just really nice sailaway21 is just really nice sailaway21 is just really nice
Discharge of which upon the navigable waters of the US will earn you a $10,000 fine. But it will probably work.(g)
__________________
“Scientists are people who build the Brooklyn Bridge and then buy it.”
Wm. F. Buckley, Jr.
Reply With Quote Share with Facebook
  #4  
Old 07-27-2007
SailorMitch's Avatar
Senior Moment
 
Join Date: Nov 2005
Location: MD
Posts: 1,931
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 9
SailorMitch will become famous soon enough
There also could be a blockage in the exhaust elbow. Need to remove and clean that if you have no idea when it was last done. I'd check that before I'd check the heat exchanger.
__________________
SailorMitch
Sailing winged keels since 1989.
1.20.09 Bush's last day the end of an error !! Hopefully we still have a constitution and economy left by then.


"Compassion and tolerance are not a sign of weakness, but a sign of strength." The Dalai Lama


good planets are hard to find-- a song by steve forbert


I have but one lamp by which my feet are guided, and that is the lamp of experience. I know no way of judging the future but by the past.-- Patrick Henry.
Reply With Quote Share with Facebook
  #5  
Old 08-07-2007
Junior Member
 
Join Date: Feb 2002
Posts: 4
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
rsford is on a distinguished road
Thanks for the suggestions.
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
Water, Water Everywhere Tania Aebi Cruising Articles 0 06-14-2004 08:00 PM
Basic Thoughts on Tides Jim Sexton Seamanship Articles 0 11-17-2003 07:00 PM


All times are GMT -4. The time now is 04:34 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

The SailNet.com store is owned and operated by a company independent of the SailNet.com forum. You are now leaving the SailNet forum. Click OK to continue or Cancel to return to the SailNet forum.