No Heat! Blowing Coolant - Ford Powerstroke Diesel Forum
LinkBack Thread Tools Display Modes
post #1 of 4 Old 12-09-2011, 07:39 PM Thread Starter Rookie
Join Date: Dec 2011
Posts: 4
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
No Heat! Blowing Coolant

New to the site. Have spent the last two hour here. Love it. I have a 02' 7.3 turbo with 240K on it. It stopped blowing heat, then would start again. Temp gauge would almost max when I had heat. Shut heater off, temp gauge would fall. Leave off for a minute, and turn it back on-same thing. Had a buddy put in new thermostat. Had heat, but he wasn't sure he had system bled out. Ran it for 5 miles and blew all coolant out. There also has been a lot of smoke. Had so called diesel mechanic look at it, and he's a little stumped because he really does not see head gaskets go on this engine. Says it might be a cracked head. I know that means I'd be you know what. Does anyone know of any other possible reasons this might be happening. I was getting ready to sell this thing for about 12K. Cracked head=new engine=10K, again, I'd really be you know what. HELP! Thanks!
GONZ is offline  
Sponsored Links
post #2 of 4 Old 12-09-2011, 09:28 PM Fanatic
Join Date: Jun 2009
Posts: 143
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Sounds like a good one... ugh

Ok, head gasket, possible, but rare on the 7.3 / 444e, Cracked head, seen a couple, but once again, pretty rare, these heads are built fairly well.

Cracked cylinder wall. Very high chance of that one. From my experience, # 7 or #8. Most I have seen have been #7.

Now, this is not to say that a simple solution won't be found, just voicing some experience here. The basic design of the engine allows combustion gases into the cooling passages at the cylinder walls, head gasket surface, or.... The injector cups if something is horribly wrong with one of your heads. It would take a combination failure of the seating surface in the head, a bad copper washer, a loose injector clamp, perhaps a blown off injector tip, and perfect alignment of the planets... but it COULD happen.

Best thing to do, is pressurize the cooling system with it full of water, and see where the water comes out. Drain the oil, and watch to see if water comes out of the crankcase. While you're at it, pull your turbo, and see which up pipe is clean, or has white residue, that will tell you which side of the engine to look at.

On the t-stat change. These things normally self bleed quite well, but some of them can be an absolute bear to get the air out of. And when they do burp, they spew coolant everywhere. Best tool to use is a vacuum bleeder on the overflow tank, it will let you get all the trapped air out, then draw coolant in to fill the void.

Good luck with it.
Highwaywrench is offline  
post #3 of 4 Old 12-10-2011, 06:43 PM Thread Starter Rookie
Join Date: Dec 2011
Posts: 4
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews

Thanks! Highwaywrench. You really sound like you know your stuff. It's all greek to me. I will ask these mechanics about what you thought. Any thoughts on what a crack cylinder wall might cost? Thanks again. Gonz
GONZ is offline  
post #4 of 4 Old 12-10-2011, 07:40 PM
Compression Ignition Addict
dazdillenger's Avatar
Join Date: Feb 2011
Location: upstate ny
Posts: 2,254
Thanks: 0
Thanked 3 Times in 3 Posts
Mentioned: 0 Post(s)
Quoted: 1 Post(s)
Feedback Score: 7 reviews
Sounds like you have a cracked cylinder liner. Get some test strips from napa and check for combustion chamber gases in the coolant.

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

2005 Lariat CCSB F-350 SRW
300,000 miles and going strong

12" fabtech lift with 40" Xterrain's on M/T classic locks, Adjustable track bar, Bilstein 7100 reservoir shocks

Edge juice/attitude CTS, SCT with ID tunes, Snow meth. injection, Diamond eye 4" exhaust, 03 turbo, ARP studs, Sinister coolant filter

2010 stone seats/console, pioneer avic d3 with backup camera/bluetooth

Viair 450c compressor, dual 2.5 gallon tanks, air horns rated @115db
dazdillenger is offline  
Sponsored Links

Quick Reply

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:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


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
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

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

For the best viewing experience please update your browser to Google Chrome