6.7 mpg decreasing
FTE Leadership Emeritus
Joined: Sep 2000
Posts: 23,174
Likes: 1,678
From: Stephensville WI
My truck MPG varies +/- 1MPG depending on fuel quality. We get a 5% rebate from our local Co-Op on fuel (Cenex) but I get better fuel mileage with Kwik Trip diesel.
My mileage went down almost 2MPG when I tried a tank of Pilot B20 last summer while on a road trip. That was the last time I tried biodiesel.
My mileage went down almost 2MPG when I tried a tank of Pilot B20 last summer while on a road trip. That was the last time I tried biodiesel.
Laughing Gas
Joined: Mar 2018
Posts: 1,147
Likes: 309
I have a 2018 F250 6.7 been driving it for about 2weeks now and seem/feels like something’s just not right with the truck. I have it deleted(EZ) for years with no issues. So long story short made a 4hr drive and about half-way my MPGs while watching my gauge was dropping about .3-.5mpg while in cruise control I know it’s not a lot but it feels like the truck is really having to work almost like towing or the parking break is on. Is this an injector going bad? I have 78k on it have used additive throughout its life and still so I should have clean fuel.
Signed,
Karen 😂
Tuned
Joined: Mar 2021
Posts: 370
Likes: 178
Jeez, way to derail the thread...
ever check your MAP sensor? Mine was pretty caked at 40k miles (not deleted with the egr still active) and after cleaning it I gained more mpg's (especially when towing)
Could be an injector.. I'd throw forscan on it and look at balance rates.
ever check your MAP sensor? Mine was pretty caked at 40k miles (not deleted with the egr still active) and after cleaning it I gained more mpg's (especially when towing)
Could be an injector.. I'd throw forscan on it and look at balance rates.
New User
Joined: Sep 2021
Posts: 4
Likes: 0
I had a 2011 6.7 and the fuel mileage dropped like yours. Turned out to be a caliper bracket slider failing.More brake dust on one wheel than the other three.
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Fleet Mechanic
Joined: Aug 2006
Posts: 1,767
Likes: 403
From: Logan, Utah
I love it!!!!!!?
If people understood what deleting accomplishes, everyone would want to do it. Engine breathes way better. There's no place to trap heat.
Karen....... That's funny!
If people understood what deleting accomplishes, everyone would want to do it. Engine breathes way better. There's no place to trap heat.
Karen....... That's funny!
Cargo Master
Joined: Oct 2005
Posts: 2,866
Likes: 515
From: WNY
I don’t get it either, and those who delete will get a surprise like no other if engine work, such as a CP4 soiling the bed…and for exactly what gain?
Cargo Master
Joined: Oct 2005
Posts: 2,866
Likes: 515
From: WNY
LOL..Warranty for one…
1,050 stock torque for another…
Maybe leave clean air for others to breathe, but I’m betting consideration for others isn’t part of the thinking here.
1,050 stock torque for another…
Maybe leave clean air for others to breathe, but I’m betting consideration for others isn’t part of the thinking here.
Fleet Mechanic
Joined: Aug 2006
Posts: 1,767
Likes: 403
From: Logan, Utah
The Magnussen-Moss Act prevents manufacturers from refusing to warranty the truck because of alterations. The fuel pump, surprisingly, has absolutely nothing to do with the exhaust pipe.
Mind blower there......
Just buy trucks from a dealer that isn't a Karen lover.
OP's problem is likely the MAF. I havent deleted the last 12 Fords I've owned, but when I did, I never saw a mpg increase of any kind.
Truck ran way cooler with way better throttle response.
"I'm going to implode....". Poor Karen
It's Christmas. Everybody love the Karens.
Mind blower there......
Just buy trucks from a dealer that isn't a Karen lover.
OP's problem is likely the MAF. I havent deleted the last 12 Fords I've owned, but when I did, I never saw a mpg increase of any kind.
Truck ran way cooler with way better throttle response.
"I'm going to implode....". Poor Karen
It's Christmas. Everybody love the Karens.
Cargo Master
Joined: Oct 2005
Posts: 2,866
Likes: 515
From: WNY
The Magnussen-Moss Act prevents manufacturers from refusing to warranty the truck because of alterations. The fuel pump, surprisingly, has absolutely nothing to do with the exhaust pipe.
Mind blower there......
Just buy trucks from a dealer that isn't a Karen lover.
OP's problem is likely the MAF. I havent deleted the last 12 Fords I've owned, but when I did, I never saw a mpg increase of any kind.
Truck ran way cooler with way better throttle response.
"I'm going to implode....". Poor Karen
It's Christmas. Everybody love the Karens.
Mind blower there......
Just buy trucks from a dealer that isn't a Karen lover.
OP's problem is likely the MAF. I havent deleted the last 12 Fords I've owned, but when I did, I never saw a mpg increase of any kind.
Truck ran way cooler with way better throttle response.
"I'm going to implode....". Poor Karen
It's Christmas. Everybody love the Karens.
LOL. yeah, go ahead convince yourself that that really is a viable option. The exhaust pipe does have something to do with the fuel pump warranty and function if Ford says it does..and they do.
Prove them wrong because the papers you accepted states that alterations voids their warranty.
Go ahead, hire an attorney at 500 an hour, and and try to prove that one against Ford’s legal department in a court of law in say, 2028. If any lawyer doesn’t get the plaintiff to come to their senses by using fact, then think about finally getting a court date after 5 years of delays and 20k in expenses…and then lose.
Honestly, I deleted all of my previous PSD back when it was easy. 99’, 2003’, and 2008 back when huge gains were made...while fully accepting the fact that I am fully responsible. No chance deleting my 2020’., not with the huge stock power and MPG from the factory, with little to gain.,
Trailering
Joined: Dec 2021
Posts: 16
Likes: 8
The skid steer easily outweighs that 1/2 ton. And the trailer didn’t have any brakes.
Lead Driver
Joined: May 2021
Posts: 5,861
Likes: 3,500
From: Uh oh, CA
