Understanding the de-gass tank - Ford Powerstroke Diesel Forum
6.0L Problems Forum Having Trouble? Post here

Powerstroke.org is the premier Diesel Truck Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 07-06-2011, 06:39 AM
Compression Ignition Addict
 

Join Date: Nov 2010
Location: Central Missouri
Posts: 270
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 1 reviews
Understanding the de-gass tank

In the degass tank, I'm wondering why the coolant levels seems to be higher when the vehicle is cold? I would seem to me that with heat, fluid expansion would cause the fluid to be pushed into the tank, to then be sucked back after the block cooled.

Anyone know why this occurrs?

Seems to me, ford should have replace all the tanks, for a larger tank (with the new proper markings) at their cost... What the Hay??
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2  
Old 07-06-2011, 08:48 AM
Compression Ignition Addict
 

Join Date: May 2011
Location: DFW, Texas
Posts: 495
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Best I can think of is that due to the pressure balances in the motor the coolant is circulated up through the degas tank normally during the coolant cycle in the truck, once you shut the truck off the system is still pressurized. What happens tho is that once the coolant at the thermostat gets below 190* the thermostat closes but the pressure imbalance in the motor still causes coolant to be drawn in to the degas tank.
Reply With Quote Quick reply to this message
  #3  
Old 07-06-2011, 09:44 AM
Compression Ignition Addict
 

Join Date: Nov 2010
Location: Central Missouri
Posts: 270
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 1 reviews
One thing about that theory that might be partially incorrect; the thermostat doesn't completely seal off as it will still allow some passage even when its closed.
Reply With Quote Quick reply to this message
  #4  
Old 07-06-2011, 10:00 AM
Compression Ignition Addict
 

Join Date: May 2011
Location: DFW, Texas
Posts: 495
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Good point...

Back to the drawing board I go!
Reply With Quote Quick reply to this message
  #5  
Old 07-06-2011, 10:20 AM
Compression Ignition Addict
 

Join Date: Feb 2010
Posts: 192
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Quote:
Originally Posted by Horsestrokin View Post
In the degass tank, I'm wondering why the coolant levels seems to be higher when the vehicle is cold? I would seem to me that with heat, fluid expansion would cause the fluid to be pushed into the tank, to then be sucked back after the block cooled.

Anyone know why this occurrs?

Seems to me, ford should have replace all the tanks, for a larger tank (with the new proper markings) at their cost... What the Hay??
I know that the de-gas tank are made cheap and sometimes they leak throught the seams very easily and not be a bad oil cooler !! my 2 cents.
Reply With Quote Quick reply to this message
  #6  
Old 07-06-2011, 10:24 AM
Compression Ignition Addict
 

Join Date: Nov 2010
Location: Central Missouri
Posts: 270
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 1 reviews
Louie,

I didnt understand what point you were trying to make
Reply With Quote Quick reply to this message
  #7  
Old 07-06-2011, 10:31 AM
Compression Ignition Addict
 

Join Date: Feb 2010
Posts: 192
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Quote:
Originally Posted by Horsestrokin View Post
Louie,

I didnt understand what point you were trying to make
someone in here mention that if the degas tank is blowing that more likely be the oil cooler and it could be, but then at the sametime the degas tanks crack at the seams frequently...they are made cheap.
Reply With Quote Quick reply to this message
  #8  
Old 07-06-2011, 01:26 PM
Compression Ignition Addict
 

Join Date: Nov 2010
Location: Central Missouri
Posts: 270
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 1 reviews
I think Ford should have replaced them cause too many mechnics or service center will work on or check fluids and wont know about the "updated info" and will fill the tanks too high.

Also that just reduces the volume of extra water cause the tanks were not increased in size, which will/can cause premature overheating
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Ford Powerstroke Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Display Modes

Posting Rules
You may post new threads
You may 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 On
Pingbacks are On
Refbacks are On



All times are GMT -8. The time now is 05:07 PM.


Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.1
Garage Plus, Vendor Tools vBulletin Plugins by Drive Thru Online, Inc.

vB.Sponsors