Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 29-06-2016, 23:48   #1
Registered User

Join Date: Jun 2016
Location: UK/ travel Europe extensively
Boat: Princess and Sunseeker 39ft - 35m
Posts: 4
Send a message via Skype™ to NicholasHill
Mann 900 v8, Low pressure coolant tank and loosing water

Hi there,I am currently delivering a Sunseeker 60, 2008, with 2x MANN v8 900, we are getting coolant tank low pressure warnings followed by low level coolant warning.
Initial thoughts are that the coolant tank cap is leaking, but then where is the water going? We lost 4.5 litres during a 90M trip at 1900 rpm/ 17 kts? We have just pressurised the tank and started the engine in the hope that we could see coolant coming out of the exhaust!
Any ideas greatly appreciated,
Nick
__________________

__________________
NicholasHill is offline   Reply With Quote
Old 30-06-2016, 00:36   #2
Registered User

Join Date: Feb 2013
Location: WY / Currently in Hayes VA on the Chesapeake
Boat: Ocean Alexander, Ocean 44
Posts: 922
Re: Mann 900 v8, Low pressure coolant tank and loosing water

If you have a bad head gasket you should either have white exhaust and/or milky looking oil. If you have a bad heat exchanger the water will be just disappearing. A coolant pressure tester will be very useful.
__________________

__________________
darylat8750 is offline   Reply With Quote
Old 30-06-2016, 01:54   #3
Registered User

Join Date: Jun 2016
Location: UK/ travel Europe extensively
Boat: Princess and Sunseeker 39ft - 35m
Posts: 4
Send a message via Skype™ to NicholasHill
Re: Mann 900 v8, Low pressure coolant tank and loosing water

Many thank, no white exhaust but possible coolant coming out of exhaust. So awaiting engineer for coolant tank
Thanks for the advice
NH
__________________
NicholasHill is offline   Reply With Quote
Old 30-06-2016, 21:50   #4
Registered User

Join Date: Jun 2016
Location: UK/ travel Europe extensively
Boat: Princess and Sunseeker 39ft - 35m
Posts: 4
Send a message via Skype™ to NicholasHill
Re: Mann 900 v8, Low pressure coolant tank and loosing water

Darylat8750,
We got to the bottom of the issue: the coolant stack housing has corroded at the union with the end caps and needs replacing.
Thanks for your advice.
KR
NICK
__________________
NicholasHill is offline   Reply With Quote
Reply

Tags
coolant, 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
Isolate hot water tank from engine coolant? Sulaire Plumbing Systems and Fixtures 1 19-01-2015 02:38
Pressure water pump overpowers hot water tank NorthPacific Plumbing Systems and Fixtures 18 11-11-2014 01:14
Low Oil Pressure at Low Revs Streetcar Engines and Propulsion Systems 6 16-03-2012 11:07
How Often Do You Check Your Water and How Low Is Too Low ? rebel heart Electrical: Batteries, Generators & Solar 51 19-11-2010 08:50
Loosing coolant ?? bob_deb Engines and Propulsion Systems 20 03-02-2008 03:36



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 16:01.


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.