My MPG effing sucks! - Ford Powerstroke Diesel Forum
User Tag List

Reply
 
LinkBack Thread Tools Display Modes
post #1 of 20 Old 01-13-2009, 09:30 AM Thread Starter
Member
 
Jessibobessy's Avatar
 
Join Date: Jan 2009
Location: Alberta... soon... TEXAS!!
Posts: 47
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
My MPG effing sucks!

A few months ago I was getting somwhere between 16 and 18 mpg (mix hwy/city) and it has slowly crept down to 12-14 mpg (14 if I'm lucky!). I haven't changed my driving habits and nothing seems wrong with the engine. It isn't any colder than normal so it's not due to the weather I don't think. Maybe a bit more vibration than usually (little vibrations, it reminds me of a cell phone, not like the whole front end vibrating). We just got everything checked over and all the fluids changed etc. in November and he said everything looked fine. He said I should keep an eye on the injectors because the computer showed that one stuck open in the past sometime, but it wasn't something serious yet. Could my injectors be starting to go?!

Any suggestions? Thanks!
Jessibobessy is offline  
post #2 of 20 Old 01-13-2009, 09:32 AM
Super Moderator

 
Goose350's Avatar
 
Join Date: Nov 2008
Posts: 13,270
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 5 Times in 5 Posts
Feedback Score: 2 reviews
Are your hubs locked in? And might be a injector going bad. My mpg did the same thing and it was the #4 injector.

The Mullet Mod
Stock 2005 F-350 4x4
*Afe Intake
*4" TB Exhaust
*Scangauge
*SCT
*Bulletproof Diesel oil bypass
*Bulletproof Diesel water pump
*Tuned FICM
Goose350 is offline  
post #3 of 20 Old 01-13-2009, 09:49 AM
Compression Ignition Addict
 
richc22a's Avatar
 
Join Date: Apr 2007
Posts: 612
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
winter blend.... I have heard that the anti-gel winter mix fuel gets less mileage than the summer blend. I have noted radical differences in mpg from different tanks, especially when traveling thru Colorado (high altitude also) last winter. I now add a Cetene Boost additive for the winter months....

Driving: 2011 Pale Adobe...F-350 CC 6.7 FX4 3:55-Locking Rear End-Dual Alternators-premium Lariat, moon rf, added wheel flares, 2-tone black base

Picked up 4/29/10 as of 06/20/2012 109,000+miles
richc22a is offline  
post #4 of 20 Old 01-13-2009, 09:52 AM
Let's Run'em


 
TwinTurboStroker's Avatar
 
Join Date: May 2007
Location: El Paso, TX
Posts: 17,818
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
Thanks: 5
Thanked 16 Times in 15 Posts
Feedback Score: 2 reviews
Send a message via AIM to TwinTurboStroker
Have you checked to see if there are any DTC's?........Goose might have nailed it, sounds like you have an injector going down

-Julian
Facebook
4th 6.fo
TwinTurboStroker is offline  
post #5 of 20 Old 01-13-2009, 10:27 AM
Super Moderator


 
PGreenSVT's Avatar
 
Join Date: Mar 2008
Location: Abingdon, Md.
Posts: 11,991
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Thanks: 4
Thanked 46 Times in 18 Posts
Feedback Score: 3 reviews
He11, my normal combined average is always pretty much 13.4 on my 05 Harley with a 50/50 driving mix. On a long trip highway only I have managed 15.4 but that really is the exception not the norm.
PGreenSVT is offline  
post #6 of 20 Old 01-13-2009, 10:32 AM
Compression Ignition Addict
 
Join Date: Aug 2007
Posts: 467
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
if you had an injector going down, wouldnt you be able to feel it though during the course of normal driving??

03 F350 SRW CC LB 4x4
4" Lift, 33 Tires, Pro Comp Trac Bars.
CFM+ Largemouth KIT
MBRP 4" straight pipe
SCT By DJ
ISSpro Gages
Rack it Racks
===============
Debating Fass or RR
dayusex is offline  
post #7 of 20 Old 01-13-2009, 10:34 AM
FJuanfiddy mod


 
Dave's Avatar
 
Join Date: Nov 2006
Location: Trempealeau, WI
Posts: 31,821
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 6 Post(s)
Thanks: 132
Thanked 182 Times in 162 Posts
Feedback Score: 0 reviews
Send a message via Yahoo to Dave
Its most likely winter blend diesel this time of year

Email: Dave@powerstroke.org
2011 F150 Ecoboost Crew cab lariat. Custom tunes from KEM and 5Star, and Unleashed
2012 F150 Crew Cab Ecoboost stock for now-Totaled March 12 2015
2006 F250 ECSB Lariat 4x4

Leveling kit, 315/70/17 Kelly TSRs on Method race wheels
ARP studs and OEM gaskets done by Renegade Diesel
ECM and Atlas 40 FICM tuned by Bill at PHP SCT tunes by Truck Source Diesel. Gearhead, Innovative, Wildman and Tyrant diesel
Flowmaster/MBRP Hybrid Exhaust
Edge Insight CTS
Coolant filter
Bulletproof diesel FICM EGR Delete, Oil Cooler and Water Pump, and Light bar.
Dually LED lights from Stealth Automotive/Xpedition Outfitters
No Limit Fab 6.0 Cold Air Intake
http://www.bulletproofdiesel.com/default.asp
http://nolimitfabrication.com/
Dave is offline  
post #8 of 20 Old 01-13-2009, 10:46 AM
Compression Ignition Addict
 
breuer69's Avatar
 
Join Date: Mar 2008
Location: Papillion, Nebraska
Posts: 540
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Well it might not be "abnormally cold" but at least down here is colder then it was a few months ago, and my MPG's are down too. I'm seeing slightly higher numbers then you are, but I think its probably slightly warmer too (it was -4F on my way to work this morning.

$0.02



2006 Ford F250 CC Lariat, SB FX4, 6.0L PSD, 5R110
2006 Mercury Mountaineer Premium 4.6L 3V AWD
1989 Ford Mustang LX Hatch. 5.0 (on a stand), AOD (T5 swap in the future).



breuer69 is offline  
post #9 of 20 Old 01-13-2009, 11:05 AM
Compression Ignition Addict
 
Join Date: May 2007
Location: America
Posts: 6,782
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 1 Time in 1 Post
Feedback Score: 0 reviews
I get 10mpg empty on the freeway so don't feel to bad.
2005F250 is offline  
post #10 of 20 Old 01-13-2009, 11:06 AM
FJuanfiddy mod


 
Dave's Avatar
 
Join Date: Nov 2006
Location: Trempealeau, WI
Posts: 31,821
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 6 Post(s)
Thanks: 132
Thanked 182 Times in 162 Posts
Feedback Score: 0 reviews
Send a message via Yahoo to Dave
Quote:
Originally Posted by 2005F250 View Post
I get 10mpg empty on the freeway so don't feel to bad.
I hate to say it but you've either got a brick tied to your right foot or some other issues

Email: Dave@powerstroke.org
2011 F150 Ecoboost Crew cab lariat. Custom tunes from KEM and 5Star, and Unleashed
2012 F150 Crew Cab Ecoboost stock for now-Totaled March 12 2015
2006 F250 ECSB Lariat 4x4

Leveling kit, 315/70/17 Kelly TSRs on Method race wheels
ARP studs and OEM gaskets done by Renegade Diesel
ECM and Atlas 40 FICM tuned by Bill at PHP SCT tunes by Truck Source Diesel. Gearhead, Innovative, Wildman and Tyrant diesel
Flowmaster/MBRP Hybrid Exhaust
Edge Insight CTS
Coolant filter
Bulletproof diesel FICM EGR Delete, Oil Cooler and Water Pump, and Light bar.
Dually LED lights from Stealth Automotive/Xpedition Outfitters
No Limit Fab 6.0 Cold Air Intake
http://www.bulletproofdiesel.com/default.asp
http://nolimitfabrication.com/
Dave 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