Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 18-11-2017, 20:28   #1
Registered User

Join Date: Nov 2015
Location: Australia
Boat: Leopard 39
Posts: 27
Coolant loss in Yanmar 30

The level of coolant in the reservoir of my Yanmar 30 diesel drops markedly during engine use. What are the possible causes - I imagine these could range from bad to disastrous! Couldn't see any red coolant under the engine. Any ideas where to start?
__________________
velella15 is offline   Reply With Quote
Old 18-11-2017, 21:00   #2
Registered User

Join Date: Oct 2012
Location: Currently Tasmania after Pacific crossing
Boat: Catalina 42
Posts: 217
Re: Coolant loss in Yanmar 30

Sorry to hear this. Could be going into oil, or out with raw water. Also check all rubber hoses & clamps....coolant may be leaking, pooling out of sight and drying.
__________________
Amnesia II is offline   Reply With Quote
Old 19-11-2017, 05:51   #3
Registered User

Join Date: Aug 2015
Posts: 442
Re: Coolant loss in Yanmar 30

Most likely is a leak in the heat exchanger that allows coolant into the exhaust.

Next most likely is a bad head gasket, but you'd probably have noticed that by now... Hard starting, white smoke etc.
__________________
boatbod is offline   Reply With Quote
Reply

Tags
coolant, yanmar

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
Coolant Loss Seadoc777 Engines and Propulsion Systems 3 04-06-2017 18:18
Yanmar 4JHTE loss of rpm,s magique Engines and Propulsion Systems 14 18-01-2014 14:51
Volvo Penta MD2030D Coolant Loss Captain Hook Engines and Propulsion Systems 18 11-09-2013 07:39
Engine Coolant Loss rabend Engines and Propulsion Systems 25 31-05-2011 18:01
Yanmar 30GM30F - Black Smoke, Power Loss FlatHatter Engines and Propulsion Systems 4 15-09-2009 21:03



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 06:17.


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.