Poor Fuel Mileage? - Ford Powerstroke Diesel Forum
 6Likes
Reply
 
LinkBack Thread Tools Display Modes
post #1 of 27 Old 09-05-2018, 08:23 PM Thread Starter
Fire From the Clouds!

 
Horizon122's Avatar
 
Join Date: Aug 2013
Location: Thee Big Apple
Posts: 1,688
Thanks: 7
Thanked 77 Times in 77 Posts
Mentioned: 13 Post(s)
Quoted: 232 Post(s)
Feedback Score: 0 reviews
Poor Fuel Mileage?

I am getting poor fuel mileage and not sure why?

I completely restored my truck and did the following engine mods.

S&B Intake
MBRP 4" SS T304 Straight Pipe
KC Turbos Billet Wheel and 360 Bearings
Garrett Non-EBPV Pedestal W/ High Flow Outlet
International Bellowed UP-Pipes W/ Ceramic Coating
BD Diesel Intercooler Boots
PHP Hydra

Followed up by new filters and oil change. I also dropped the fuel tank and gave it a good cleaning plus stainless steel fuel lines.

For the Hydra, I mainly run it in the stock setting running around town and 65HP or 100HP canned tunes on the highway.

I get the best MPG in the stock setting and on the Hydra tunes I might as well have a hole in my gas tank. Iv'e driven about 150 miles since filling it up, with mixed driving I have a little over quarter tank.

I drive with a heavy foot but the overhead console used to estimate about 10+ MPG before these mods and now it says 5-6 MPG.

I don't have any leaks, noises, smells or anything else I can think of. Though in the stock setting the truck does feel a little under powered, but it could just be in my mind. On 100hp the truck feels like a rocket ship.

I'm running a 2.5" lift on 35.5x13R20's with 3.73 gears.

2002 Ford F350-Lariat-CrewCab-LongBed-7.3L PowerStroke Intercooled Turbo Diesel!
2.5 PMF lift on 325/60r20 Nitto M/T's
Enough Stuff To Pull Yours!


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Horizon122 is offline  
Sponsored Links
Advertisement
 
post #2 of 27 Old 09-11-2018, 09:35 AM
Member
 
lizardking7750's Avatar
 
Join Date: May 2009
Posts: 58
Thanks: 0
Thanked 4 Times in 4 Posts
Mentioned: 0 Post(s)
Quoted: 2 Post(s)
Feedback Score: 0 reviews
Brake caliper dragging? When mine started to drag my mileage dropped to like 10 from 14. Run with your hubs locked all the time?
My 02 on 35 12.50s with 3.73s gets 14 with intake/exhaust, no tuner.

2002 F250 XLT 7.3
4" lift, 315/75R16 Duratracs, Warn locking hubs,
4" Magnaflow stainless exhaust, AC injectors, T500 HPOP, Sinister Diesel coolant filter, water outlet and regulated return, Riff Raff CAC boots and plenum inserts, S&B intake, Wicked Wheel, bellowed up pipes, pre-pump and in tank mods, AIH delete, 6.0 trans cooler, Stancor GPR, GPR led mod, Isspro boost, trans temp, pyro, and fuel pressure gauges, foil delete, EBPV delete, 2008 front end, tailgate, mirrors and brake lights
lizardking7750 is offline  
post #3 of 27 Old 09-11-2018, 03:57 PM
Compression Ignition Addict
 
cletusjermal's Avatar
 
Join Date: Jun 2011
Location: Utah
Posts: 1,996
Thanks: 15
Thanked 152 Times in 148 Posts
Mentioned: 7 Post(s)
Quoted: 401 Post(s)
Feedback Score: 0 reviews
I got horrible mileage when the EBPS was malfunctioning. Check that or the tube if you haven’t

2017 F350 6.7L 4x4 FX4 SRW CCSB Lariat Ultimate

Sold—2002 F350 7.3 4x4 SRW CCLB. GTP38R, PIS 175/80 injectors, Sam Wyse Stage 2 Trans, 6.0 cooler, Banks Intercooler, 4" Turbo back Exhaust, PHP tuned TS 6 position chip, CNC 4 Line feed, HPOP and HPX Lines. International bellowed up pipes. AFE Stage 2 Intake w/ Dry filter. Banks exhaust brake and smart lock. Hutch/Harpoon mod, 910 Valve springs, Billet intake plenums. Firestone airbags. Trailready full guard front bumper. PIAA Driving and Fog lights. Micky Thompson Wheels.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
cletusjermal is offline  
Sponsored Links
Advertisement
 
post #4 of 27 Old 09-11-2018, 07:19 PM Thread Starter
Fire From the Clouds!

 
Horizon122's Avatar
 
Join Date: Aug 2013
Location: Thee Big Apple
Posts: 1,688
Thanks: 7
Thanked 77 Times in 77 Posts
Mentioned: 13 Post(s)
Quoted: 232 Post(s)
Feedback Score: 0 reviews
I just did SSBC front and rear V8 big brake calipers and EBC drilled/slotted rotors with the engine mods. So brakes aren't dragging. My hubs are unlocked now, I used to always run with the hubs locked because I was lazy and still got over 10+ MPG.

@cletusjermal

Do you have a link on what to look for and how to check that?

I'm running riff raffs EBPV dummy plug so I don't get a code, not sure if you're talking about the same thing.

2002 Ford F350-Lariat-CrewCab-LongBed-7.3L PowerStroke Intercooled Turbo Diesel!
2.5 PMF lift on 325/60r20 Nitto M/T's
Enough Stuff To Pull Yours!


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Horizon122 is offline  
post #5 of 27 Old 09-11-2018, 07:32 PM
Compression Ignition Addict
 
00t444e's Avatar
 
Join Date: May 2014
Location: Southern OH
Posts: 2,424
Thanks: 41
Thanked 147 Times in 141 Posts
Mentioned: 13 Post(s)
Quoted: 597 Post(s)
Feedback Score: 0 reviews
Having the hubs locked has never made a difference in fuel mileage for me. Your exhaust pressure sensor is mounted on the front of the engine with a tube that runs to the passenger side manifold, it is common for the tube and sensor to get plugged up with soot.

00 f250 ext. cab, lb, 4x4, 158,000, zf 6 speed, South Bend 1944ofe, 4 in lift, 315/75/16 Courser MXTs, rear Detroit locker, PMF traction bars, Full Force 180/80 injectors, php hydra, Riff Raff frx, Riff Raff billet compressor wheel, Dieselsite pre pump kit, Dorman up pipes,IAH delete, ccv mod, 6637 filter, Auto Meter gauges, scan guage 2, 4 in diamod eye straight pipe 6 in tip.
00t444e is offline  
post #6 of 27 Old 09-11-2018, 08:31 PM
Compression Ignition Addict
 
cletusjermal's Avatar
 
Join Date: Jun 2011
Location: Utah
Posts: 1,996
Thanks: 15
Thanked 152 Times in 148 Posts
Mentioned: 7 Post(s)
Quoted: 401 Post(s)
Feedback Score: 0 reviews
As 444e said it’s on the front of the engine right by where the water pump is. There is a 1 inch ish heater hose running into the water pump on the top. It’s right by that. To clean the tube I just sprayed brake cleaner through it. You could use a pipe cleaner if you can find one that is long enough. Be careful with the sensor. If you use brake cleaner on that I think it destroyed it so don’t use it. Just use a little pick to clean what you can if it’s clogged. Or just get a new one.

2017 F350 6.7L 4x4 FX4 SRW CCSB Lariat Ultimate

Sold—2002 F350 7.3 4x4 SRW CCLB. GTP38R, PIS 175/80 injectors, Sam Wyse Stage 2 Trans, 6.0 cooler, Banks Intercooler, 4" Turbo back Exhaust, PHP tuned TS 6 position chip, CNC 4 Line feed, HPOP and HPX Lines. International bellowed up pipes. AFE Stage 2 Intake w/ Dry filter. Banks exhaust brake and smart lock. Hutch/Harpoon mod, 910 Valve springs, Billet intake plenums. Firestone airbags. Trailready full guard front bumper. PIAA Driving and Fog lights. Micky Thompson Wheels.


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

Last edited by cletusjermal; 09-11-2018 at 08:34 PM.
cletusjermal is offline  
post #7 of 27 Old 09-11-2018, 08:38 PM
Compression Ignition Addict
 
cletusjermal's Avatar
 
Join Date: Jun 2011
Location: Utah
Posts: 1,996
Thanks: 15
Thanked 152 Times in 148 Posts
Mentioned: 7 Post(s)
Quoted: 401 Post(s)
Feedback Score: 0 reviews
This is the only pic I have. If you look to the left of the heater hose on top of the water pump and just behind the pulley is the sensor with the plug on top. On the bottom you have the metal tube coming from the pass manifold. That’s the sensor
Attached Thumbnails
Click image for larger version

Name:	F88E1221-4D6B-497E-8A2A-ADB2D3684A10.jpeg
Views:	93
Size:	2.42 MB
ID:	707651  

2017 F350 6.7L 4x4 FX4 SRW CCSB Lariat Ultimate

Sold—2002 F350 7.3 4x4 SRW CCLB. GTP38R, PIS 175/80 injectors, Sam Wyse Stage 2 Trans, 6.0 cooler, Banks Intercooler, 4" Turbo back Exhaust, PHP tuned TS 6 position chip, CNC 4 Line feed, HPOP and HPX Lines. International bellowed up pipes. AFE Stage 2 Intake w/ Dry filter. Banks exhaust brake and smart lock. Hutch/Harpoon mod, 910 Valve springs, Billet intake plenums. Firestone airbags. Trailready full guard front bumper. PIAA Driving and Fog lights. Micky Thompson Wheels.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
cletusjermal is offline  
post #8 of 27 Old 09-11-2018, 10:12 PM Thread Starter
Fire From the Clouds!

 
Horizon122's Avatar
 
Join Date: Aug 2013
Location: Thee Big Apple
Posts: 1,688
Thanks: 7
Thanked 77 Times in 77 Posts
Mentioned: 13 Post(s)
Quoted: 232 Post(s)
Feedback Score: 0 reviews
I'll have to take a look at it in the morning. With these mods, what kind of MPG should I be expecting? I'd be happy with 12+. But not 5-6.

2002 Ford F350-Lariat-CrewCab-LongBed-7.3L PowerStroke Intercooled Turbo Diesel!
2.5 PMF lift on 325/60r20 Nitto M/T's
Enough Stuff To Pull Yours!


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Horizon122 is offline  
post #9 of 27 Old 09-12-2018, 01:50 AM
Compression Ignition Addict
 
cletusjermal's Avatar
 
Join Date: Jun 2011
Location: Utah
Posts: 1,996
Thanks: 15
Thanked 152 Times in 148 Posts
Mentioned: 7 Post(s)
Quoted: 401 Post(s)
Feedback Score: 0 reviews
12 in town should be expected if you aren’t flooring it everywhere. I would say at least 15 on the highway doing a reasonable speed.

2017 F350 6.7L 4x4 FX4 SRW CCSB Lariat Ultimate

Sold—2002 F350 7.3 4x4 SRW CCLB. GTP38R, PIS 175/80 injectors, Sam Wyse Stage 2 Trans, 6.0 cooler, Banks Intercooler, 4" Turbo back Exhaust, PHP tuned TS 6 position chip, CNC 4 Line feed, HPOP and HPX Lines. International bellowed up pipes. AFE Stage 2 Intake w/ Dry filter. Banks exhaust brake and smart lock. Hutch/Harpoon mod, 910 Valve springs, Billet intake plenums. Firestone airbags. Trailready full guard front bumper. PIAA Driving and Fog lights. Micky Thompson Wheels.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
cletusjermal is offline  
post #10 of 27 Old 09-18-2018, 06:48 PM
Compression Ignition Addict
 
Brandonpdx's Avatar
 
Join Date: Mar 2017
Location: Linden, NJ
Posts: 312
Thanks: 3
Thanked 18 Times in 17 Posts
Mentioned: 2 Post(s)
Quoted: 66 Post(s)
Feedback Score: 0 reviews
Jesus those are some awful mpg numbers. I hand calculated 18.5 when I filled up on Saturday. Most of that isn't highway driving either.
Brandonpdx is offline  
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:
OR

Log-in










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