Steadly decreasing fuel milage - Ford Powerstroke Diesel Forum
6.0L Problems Forum Having Trouble? Post here

User Tag List

Reply
 
LinkBack Thread Tools Display Modes
post #1 of 12 Old 07-11-2011, 11:14 PM Thread Starter
Powerstroke.org Rookie
 
Join Date: Jul 2011
Location: northern alberta/BC
Posts: 6
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Steadly decreasing fuel milage

So bought this truck a month ago 100000km on it. Its an 07 6.0 . It had awesome power and decent fuel milage,5.6km/L. 10,000 k later its lost some power and fuel milage was down to 5.3 ,so i replaced the fuel filters(yes there ford) and had ALL my power back but NO gain in fuel milage, now 3 days later its lacking a bit of power again and milage is down to 5.2....Filters are still clean, fuel and driving habits are the same. i run diesel kleen every other tank. from the last few hours of reading i am leaning towards bad ficm or failing injectors.... any thoughts from the techs? oh btw thats about 12.3-12.4 mpg ...sorry im in canada guys

my 06 kingranch with 37's chiped and done to the nuts gets better milage than this :S
Dooley rig 29 is offline  
post #2 of 12 Old 07-12-2011, 05:03 PM
Premium Member
 
Join Date: Aug 2009
Location: Somewhere Between Good and Bad
Posts: 1,895
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quoted: 18 Post(s)
Thanks: 9
Thanked 61 Times in 60 Posts
Feedback Score: 0 reviews
Quote:
Originally Posted by Dooley rig 29 View Post
So bought this truck a month ago 100000km on it. Its an 07 6.0 . It had awesome power and decent fuel mileage,5.6km/L. 10,000 k later its lost some power and fuel mileage was down to 5.3 ,so i replaced the fuel filters(yes there ford) and had ALL my power back but NO gain in fuel mileage, now 3 days later its lacking a bit of power again and mileage is down to 5.2....Filters are still clean, fuel and driving habits are the same. i run diesel kleen every other tank. from the last few hours of reading i am leaning towards bad ficm or failing injectors.... any thoughts from the techs? oh btw thats about 12.3-12.4 mpg ...sorry im in Canada guys

my 06 kingranch with 37's chiped and done to the nuts gets better mileage than this :S
As I was reading your thread I started thinking about the usual things that can rear their ugly head with the 6.0L and fuel mileage - - - until I got to your signature and saw that you're running 37s. I suspect those are your problem, perhaps in one or two ways. 1) they weigh more, have a higher rolling resistance, and likely have a larger cross section than stockers - meaning lower fuel mileage. 2) the truck may not have been recalibrated for the larger tires, meaning you're covering more ground than your speedometer/odometer are indicating, making you think your fuel mileage is less than it really is.

Lastly, is the fuel mileage you quote hand calculated or from the "lie-o-meter"? The lie-o-meter is notoriously over optimistic on fuel mileage...

2006 CC SB 4x4 6.0L
BPD 6 Phase 53v FICM, EGR, HD Oil Cooler, Bypass Oil Filter & Water Pump
ARP Studs w/ OEM Gaskets
DC Power 190a upper; DB Electric 200a lower alternator
295/65/20 Toyo MTs
PMF 3 Link
7,500LB Tuff Trucks Leveling Coils
Icon 2.5 piggyback CDC shocks
Dynatrac Free Spin Kit with Dynaloc Hubs
EDGE CTS Monitor w/ EGT, pressure, and temp sensors
Blue FPR Spring Kit
Twin F450 Auxiliary Springs
Banks Monster Exhaust
Truetrac rear/E locker Front with 4.11s
skanj0 is offline  
post #3 of 12 Old 07-12-2011, 05:44 PM
Compression Ignition Addict
 
Join Date: Mar 2007
Posts: 381
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
One problem that gets overlooked is you could have a brake caliper sticking on one wheel causing a drop in fuel mileage. Unfortunately its quite common on our trucks where road salt is used during the winter months.
roadrunner is offline  
post #4 of 12 Old 07-12-2011, 07:47 PM Thread Starter
Powerstroke.org Rookie
 
Join Date: Jul 2011
Location: northern alberta/BC
Posts: 6
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Quote:
Originally Posted by skanj0 View Post
As I was reading your thread I started thinking about the usual things that can rear their ugly head with the 6.0L and fuel mileage - - - until I got to your signature and saw that you're running 37s. I suspect those are your problem, perhaps in one or two ways. 1) they weigh more, have a higher rolling resistance, and likely have a larger cross section than stockers - meaning lower fuel mileage. 2) the truck may not have been recalibrated for the larger tires, meaning you're covering more ground than your speedometer/odometer are indicating, making you think your fuel mileage is less than it really is.

Lastly, is the fuel mileage you quote hand calculated or from the "lie-o-meter"? The lie-o-meter is notoriously over optimistic on fuel mileage...
sorry i should have been more clear on that , my problemed truck has 35's... my king ranch has the 37's and ive had the king ranch for 500,000 k with better fuel milage than my new truck... and its not poor fuel milage im worried about , im worried that its steadily decreasing and lacking power....i work rigs and fuel is free thank god
Dooley rig 29 is offline  
post #5 of 12 Old 07-12-2011, 07:51 PM Thread Starter
Powerstroke.org Rookie
 
Join Date: Jul 2011
Location: northern alberta/BC
Posts: 6
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
milage is hand calculated and correlated with "lie-o-meater" ,they are very close.
brakes are excellent, nothing is sticking or rubbing or warped
Dooley rig 29 is offline  
post #6 of 12 Old 07-12-2011, 08:05 PM
Compression Ignition Addict
 
2003kingranch's Avatar
 
Join Date: Dec 2010
Location: IOWA
Posts: 2,542
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Send a message via Skype™ to 2003kingranch
might sound dumb but whats your air filter look like?

[/URL]

[CENTER]2012 King Ranch
22k deleted at 1k
5" FLO-PRO
S&B Intake
Sinister Egr Delete
MiniMax/ SPE Tunes
466/953 on 37's
6" 4 link
37's on 22's
Bags and compressor
RBP mudflaps
transfer tank tool box.
9" 2" poly boss v blade
Should have kept my 6.0.....
2003kingranch is offline  
post #7 of 12 Old 07-12-2011, 08:07 PM Thread Starter
Powerstroke.org Rookie
 
Join Date: Jul 2011
Location: northern alberta/BC
Posts: 6
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
just serviced all fluids and filters, all ford parts

07, f-350, 6.0, 35" mudders, 6" bds lift, 4" straight pipe
Dooley rig 29 is offline  
post #8 of 12 Old 07-12-2011, 08:09 PM
Compression Ignition Addict
 
2003kingranch's Avatar
 
Join Date: Dec 2010
Location: IOWA
Posts: 2,542
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Send a message via Skype™ to 2003kingranch
well your next thing would be to get a hold of a scanner to read for codes or buy an edge insight (which you should have owning a 6.0 anyway) see what the ficm looks like ect...

[/URL]

[CENTER]2012 King Ranch
22k deleted at 1k
5" FLO-PRO
S&B Intake
Sinister Egr Delete
MiniMax/ SPE Tunes
466/953 on 37's
6" 4 link
37's on 22's
Bags and compressor
RBP mudflaps
transfer tank tool box.
9" 2" poly boss v blade
Should have kept my 6.0.....
2003kingranch is offline  
post #9 of 12 Old 07-12-2011, 08:15 PM Thread Starter
Powerstroke.org Rookie
 
Join Date: Jul 2011
Location: northern alberta/BC
Posts: 6
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
I have the edge insight but its 2000k away at home in my other truck im in the bush right now and sending your truck to ford up here is a joke, i know more about these trucks than they do, hopefully it lasts till the end of this hitch and i get to a real mechanic.....any other "feild" ways to check the ficm

07, f-350, 6.0, 35" mudders, 6" bds lift, 4" straight pipe
Dooley rig 29 is offline  
post #10 of 12 Old 07-16-2011, 05:37 AM Thread Starter
Powerstroke.org Rookie
 
Join Date: Jul 2011
Location: northern alberta/BC
Posts: 6
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
wow not one tech willing to chime in....thanks

07, f-350, 6.0, 35" mudders, 6" bds lift, 4" straight pipe
Dooley rig 29 is offline  
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:
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



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