fuel coolant reservoir question - TheDieselGarage.com
Thread Details Posted by deebarjay, this thread has received 6 replies and been viewed 9093 times.

 
LinkBack Thread Tools Display Modes
post #1 of 7 (permalink) Old 04-19-2009, 02:01 PM Thread Starter
Junior Member
 
deebarjay's Avatar
 
Join Date: Mar 2009
Posts: 42
Points: 3,115
Thanks: 0
Thanked 0 Times in 0 Posts
fuel coolant reservoir question

bought my truck last friday april 17th....an 08 f 250....started the learning process of whats under the hood..on the fuel cooler,is the system under pressure? i couldn't tell by looking into the peep hole if the quantity was there so unscrewed the cap and had coolant run out of the overflow..so was just curious about this...maybe just overfull ?? or is there pressure in there ???
deebarjay is offline  
Sponsored Links
Advertisement
 
post #2 of 7 (permalink) Old 04-19-2009, 03:12 PM
Diesel Addict
 
DINOONE's Avatar
 
Join Date: Jan 2009
Location: NOLA
Posts: 202
Points: 25,680
Thanks: 2
Thanked 13 Times in 10 Posts
Fuel or Engine Coolant?


Quote:
Originally Posted by deebarjay View Post
bought my truck last friday april 17th....an 08 f 250....started the learning process of whats under the hood..on the fuel cooler,is the system under pressure? i couldn't tell by looking into the peep hole if the quantity was there so unscrewed the cap and had coolant run out of the overflow..so was just curious about this...maybe just overfull ?? or is there pressure in there ???

2008 Harley Davidson F250 16" Custom Lift, Modded to Hell and beyond! "CEREAL KILLA"

Truck FOR SALE:

http://cgi.ebay.com/ebaymotors/ws/eB...category=39415
DINOONE is offline  
post #3 of 7 (permalink) Old 04-19-2009, 03:29 PM
I Eat Rice
 
forcefed6.4ford's Avatar
 
Join Date: Dec 2008
Location: next door to you
Posts: 2,155
Points: 37,030
Thanks: 29
Thanked 190 Times in 157 Posts
the fuel cooler uses coolant to cool the fuel before it goes back to the tank. It should be pressureised by the cooling system... I think.

Lets just say not quite stock.
Slower than some. Faster than most.
Canadian Club Member #10.
Ridin High Club Member #24
Singles Club Member #469

"There is no try. Only do... That is why you fail" Yoda. The wisest green piece of rubber ever created.

2008 King Ranch/Harley mix. Spartan tuned. Elite studs, Cobbs EGR delete plates. FabTech 6" 4 link with dual 2.25" remote shocks. 18" 778 Monsters 35-12.5-18 Toyo MT's DDM 35w HID's 6000K hi/lo and fogs.
forcefed6.4ford is offline  
post #4 of 7 (permalink) Old 04-19-2009, 05:36 PM Thread Starter
Junior Member
Threadstarter
 
deebarjay's Avatar
 
Join Date: Mar 2009
Posts: 42
Points: 3,115
Thanks: 0
Thanked 0 Times in 0 Posts
well....if you look at the capacities in the book it shows the engine coolant at 30 quarts and fuel cooler at 2 quarts....2 different systems...not inter connected....the fuel cooler his its own fill cap.
deebarjay is offline  
post #5 of 7 (permalink) Old 04-19-2009, 08:44 PM
Member
 
KJR0360's Avatar
 
Join Date: Jan 2009
Location: Alpharetta,GA
Posts: 95
Points: 2,875
Thanks: 22
Thanked 13 Times in 10 Posts
I was also looking over mine today (got mine a little over a week ago). The cap on the fuel cooler says it's 20 psi, higher than the 16 psi for the coolant system. I didn't have time to follow the lines but you are correct about the 2 qt. capacity. Seems like there seperate but can't figure out why or how. Need to do more investigation. This new engine is way different from the old 6.0. I thought the 6.0 was tough to work on, Ford didn't leave any room in this one.

08 F-250 SC Lariat 4x4 6.4l, Spartan tuned, DOC/DPF delete, S & B CAI, Amsoil oil by-pass, coolant filter

R.I.P. 03 F-250 SC XLT 6.0
KJR0360 is offline  
post #6 of 7 (permalink) Old 04-19-2009, 09:39 PM
Senior Member
 
Join Date: Jun 2006
Posts: 645
Points: 5,214
Thanks: 1
Thanked 44 Times in 41 Posts
yea separate and it has a small electric pump, so it will get under pressure. 6.4 uses high pressure fuel not oil like the 7.3 and 6.0s and when it gets up to real high pressure it gets real hot.

Ford certified diesel tech.
96 F350 reg cab, black. stage Is, exhaust intake TS 6pos chip and a few small tricks. tranny built up a little and a billet converter. 4in lift 35 bfg muds.
3" cowl hood, billet grille, bumper with billet grille and fog lights, 10in drop rear bumper with lights and a dropped hitch.

90 mustang lx 347 afr 185s, vic jr efi, aeromotive fuel system, c4 , 4.10 31 spline, tube k member and control arms coil overs and control arms in the rear, 10pt cage.

05 f250 red ext cab grey int, 4x4 6.0 suncoast tranny, ats 275cc injectors, studs, aeromotive fuel system, turbonetics 70mm ceramic coated turbo, dual 5 inch stacks turnned out. ALL PARTS FOR SALE
fordboyyfm is offline  
post #7 of 7 (permalink) Old 06-10-2009, 03:13 AM
* * * * *
 
rod.10853's Avatar
 
Join Date: Dec 2008
Posts: 246
Points: 34,110
Thanks: 16
Thanked 26 Times in 26 Posts
Yep, it's a separate system. I recently had a whining noise coming from
the pump a few days after having Ford do a bed plate seal oil leak
repair job. I took the truck back to Ford for the whine, and the
mechanic said that it was due to air cavitation in the system that had
formed in the pump. Supposedly there was air working it's way through
the system after the engine had been pulled and flipped and all from
earlier bed plate seal work. Anyway, the mechanic took the truck back
and said he bled out the air and topped off the coolant and the whine
went away.

The whine stayed gone for about three weeks. It came back yesterday.
I took the truck back to Ford and questioned the mechanic more about
the system, and that's when he told me it's completely separate from
the engine cooling system. Also, he said that the fuel coolant reservoir
was low again and there was air in the pump. He said that now he thinks
that the system is loosing coolant from somewhere and sucking air in.
Also, he said the pump was loose and he went ahead and ordered a
new pump to be installed when it gets in stock.

I didn't get a chance to ask him any more questions, but I wish I
could have asked him exactly what he meant by "the pump is loose".
Also, where is the pump exactly? Is it down in front at the bottom
by the radiator? Because that is where it sounds like the whine is coming
from. Would this pump be removed and reinstalled during the bed plate
oil seal leak repair work? Finally, I had to drive the truck for about 100
miles with it whining. Does this mean hot fuel was being sent back to my
tank?

Rodney

08 F250 CC LWB 4x4 PSD, 6 SPD-Manual, 3.73 LS
2.5" Leveling Kit / 2" Superlift Add-a-Leaf
18" MT Classic II Wheels / 35" Toyo MT Tires
Go Industries Rancher Grille Guard
SnugTop Truck Cap/Shell
Xtreme Liner
rod.10853 is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the TheDieselGarage.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
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:
OR

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



Similar Threads
Thread Thread Starter Forum Replies Last Post
Fuel in coolant??? my97stroker 1994-2003 7.3L Power Stroke 6 04-10-2009 03:43 AM
New coolant reservoir mschwing82 2008-2010 6.4L Power Stroke 17 03-16-2009 02:38 PM
coolant question stacks 2003-2007 6.0L Power Stroke 7 01-20-2009 04:01 AM
Question about coolant? LJ73 5.9L Cummins (1998.5-2002) 13 12-23-2007 04:13 PM
Coolant Question flip418 2003-2007 6.0L Power Stroke 5 06-27-2006 10:41 PM

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 On
Pingbacks are On
Refbacks are On

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