Loss of Fuel Mileage - 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 03-04-2013, 04:44 PM
Powerstroke.org Rookie
 

Join Date: Feb 2013
Posts: 5
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Loss of Fuel Mileage

So here is the problem I normally get around 14-16 mpg driving around town and some hwy. the last couple of times I had to fill up it averaged out to be about 11.2 mpg and 11.18 mpg. the only thing that has been done to the truck is a 4" turbo back no muffler, EGR delete, and SCT running the performance canned tune. I have not put in any gauges yet so I can not tell you what the EGTs are but the boost stays constant at about 8 pounds. It will max out at about 26-28 pounds. I am stumped at what the cause could be. that fuel came from the same place, the next tank will not just to see if its contaminated or not. Any help or thoughts would be most beneficial
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2  
Old 03-04-2013, 06:12 PM
Compression Ignition Addict
 

Join Date: Jan 2013
Posts: 321
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
That is what mine is lol idk what the issue is maybe ficm or inhectors
Reply With Quote Quick reply to this message
  #3  
Old 03-04-2013, 08:43 PM
Compression Ignition Addict
 

Join Date: Jun 2012
Location: Taunton ma
Posts: 190
Thanks: 1
Thanked 3 Times in 3 Posts
Feedback Score: 0 reviews
I had same problem boost at 8 lbs just driving. One day during oil change tire rotation found both front calipers locked up solid. After repair boost 2-3 lbs on same roads.
Reply With Quote Quick reply to this message
  #4  
Old 03-04-2013, 09:02 PM
Compression Ignition Addict
 

Join Date: Sep 2010
Posts: 440
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Could be winter blend of diesel.
Reply With Quote Quick reply to this message
  #5  
Old 03-05-2013, 07:20 PM
Serving Our Country!
 

Join Date: Nov 2012
Location: Travis Air Force Base
Posts: 1,868
Thanks: 79
Thanked 93 Times in 58 Posts
Feedback Score: 0 reviews
winter blend would be small culprit.

tire pres

maf sensor

egr valve dirty

take off sct tune and tune trans only and see
Reply With Quote Quick reply to this message
  #6  
Old 03-06-2013, 05:38 AM
Powerstroke.org Rookie
 

Join Date: Feb 2013
Posts: 5
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
I do not think that it is tire press since I check it on a weekly basis or the MAF sensor and I know it is not the EGR since I do not have one. I was thinking the same thing about the fuel though that is why the next tank will be from a different station. the reason that I do not think that it is the MAF sensor is because I am not receiving any codes. but thanks for all the info. I will keep you posted.
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:
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 02:27 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