Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 12-07-2013, 20:31   #1
Registered User

Join Date: Aug 2008
Location: Sydney
Boat: Moody Carbineer 46
Posts: 68
Onan cooling problem

Having problem with a 5.5kva 2006 model Onan. Gathered from former owner all worked OK, recently serviced - heat exchanger serviced, coolant side of cooling system flushed through, impeller and belts changed - service engineers who have been doing this for 20 years cannot get coolant to circulate! Looked at all the obvious things again, impeller, thermostat, blockages incl mechanics cloths - run out of ideas. Any thoughts really appreciated please.
__________________
nmit5903 is offline   Reply With Quote
Old 16-07-2013, 00:27   #2
Registered User

Join Date: Aug 2008
Location: Sydney
Boat: Moody Carbineer 46
Posts: 68
After much time and effort the service people found the fresh water cooling system was partially blocked with a white jelly like substance. Never seen it before however I do recall seeing a post, which I can't find. Any takers?
__________________
nmit5903 is offline   Reply With Quote
Old 17-07-2013, 01:50   #3
Registered User

Join Date: Aug 2008
Location: Sydney
Boat: Moody Carbineer 46
Posts: 68
Head off and packed with jelly like substance resulting no doubt from:
1. Salt water contamination of coolant system;
2. Some corrosion to head as result of salt/aluminium;
3. Different coolants used over years of cruising in distant parts; and
4. Overheating.
Have since seen threads referring to what can happen to coolants containing silicates in these sorts of situations.
No more updates. Hope it's helpful to someone at some time.
__________________
nmit5903 is offline   Reply With Quote
Reply

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




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 02:03.


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.