Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 03-06-2016, 08:26   #1
Registered User

Join Date: Feb 2016
Location: Northport NY
Boat: Pearson 10M
Posts: 87
Exhaust water leak?

Hey All,

Ok, so I am new to boating and a new owner of my first boat, a Pearson 10M. I understand gas engines well enough as I have owned and fixed my own motorcycles for the last 30 years, but know little about Marine Diesels . Please correct my terminology, I need to learn and communicate properly. The Engine is a Yanmar

It looks like I will be taking the boat out for the first time tomorrow so I started the engine to see if all is Ok. Other than the cable to the kill lever(?) being a bit out of adjustment all was ok expect for one problem. Yes, not being able to kill the engine was a bit of a situation but I figured it out fast enough. I am not a moron unless you question my girlfriend.

There is a plastic tank behind the engine with two large ( about 4") hoses attached to it, I assume this is the water muffler? At the bottom of this tank is a small plastic drain that leak about 2 drips a second while the engine is running. I cannot hand turn the drain to tighten. The leaking fluid appears to be salt water, it is clear and salty. (Yeah, I tasted it)

My questions are:

Can I run the engine in this condition assuming I am not worried about the small amount of water. ( should I be?)
Should I just try tightening the drain? Its all plastic and I don't want to break it.

Sorry no pics, phone was dead. Thanks!
__________________

__________________
sagablu is offline   Reply With Quote
Old 03-06-2016, 09:25   #2
Senior Cruiser

Cruisers Forum Supporter

Join Date: Mar 2007
Location: Santa Cruz
Boat: Boatless Again
Posts: 4,330
Re: Exhaust water leak?

That leak will drain down to your bilge to join the water from the other leaks. You should have a bilge pump to pump it overboard. You may want to fix the leak eventually, but it won't sink the boat for about 10,000 hours or so.
__________________

__________________
donradcliffe is offline   Reply With Quote
Old 03-06-2016, 13:09   #3
Registered User

Join Date: Feb 2016
Location: Northport NY
Boat: Pearson 10M
Posts: 87
Re: Exhaust water leak?

Thank you,

My main concern is not the water, its the engine. Is there an issue with the engine overheating as a result of this leak? Secondly, how do I repair this? Should I try to tighten the leaking drain or remove and reseal?
__________________
sagablu is offline   Reply With Quote
Old 03-06-2016, 14:23   #4
Registered User

Join Date: Jan 2009
Location: Juneau, Alaska
Boat: Prout Snowgoose 37
Posts: 104
Re: Exhaust water leak?

You have nothing to worry about with the leak overheating the engine. The water goes there AFTER cooling the engine.

As stated before, I would fix it eventually (a little bit of RTV silicone on the fastener or a small O-ring would fix it if tightening it a little does not.)

The fastener is there to enable you to drain down the water lift muffler in the winter to prevent freezing.

If the boat is new to you though, I would recommend replacing the raw water impeller.
__________________
Excalibur5 is offline   Reply With Quote
Old 03-06-2016, 14:40   #5
Senior Cruiser

Cruisers Forum Supporter

Join Date: May 2013
Location: Oregon to Alaska
Boat: Wheeler Shipyard 83' ex USCG
Posts: 1,703
Re: Exhaust water leak?

Depending on engine size and condition, it is often better to drain the muffler between uses. 1) less back pressure especially in cold weather when diesels don't start as easily. 2) If cranking the engine more than normal, hard starting, doing maintence, etc., every crank the salt water pump is filling the muffler but without exhaust, little or no water is being expelled. It can back up and enter the cylinder via the exhaust valves or ports. Also during long shutdowns, marine organisms can bloom.
I put auto valves on my water mufflers that drain whenever there is no exhaust pressure.
__________________
Lepke is offline   Reply With Quote
Old 03-06-2016, 14:57   #6
Registered User

Join Date: Feb 2016
Location: Northport NY
Boat: Pearson 10M
Posts: 87
Re: Exhaust water leak?

Thanks all! That is what I needed.
__________________

__________________
sagablu is offline   Reply With Quote
Reply

Tags
exhaust, water

Thread Tools
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
Swing keel leak pivot leak. Need help! sgumedic Construction, Maintenance & Refit 0 09-03-2015 21:44
Perkins 4.236 exhaust leak sunblock Engines and Propulsion Systems 5 10-06-2014 14:41
Lazarette Leak + Cabin Leak, short & long term fix? watanaka Construction, Maintenance & Refit 5 09-03-2014 14:25
Which Heat Conductive Material to Boost My Exhaust Heat Exchanger? Exhaust Shanaly Plumbing Systems and Fixtures 4 05-07-2013 04:58
Exhaust Not Emitting Enough Water with Exhaust swahealy2 Engines and Propulsion Systems 24 13-06-2011 11:08



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 15:46.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.