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In General, Are the 6.7L's better engines than the early built 6.0L's..?

18K views 33 replies 20 participants last post by  FishOnOne 
#1 ·
I am the unfortunate owner of a 2004 F250 King Ranch with the early 2003 6.0 Diesel... I bought the truck new (ordered it), modified it for Offroading, have had problems with the engine since day 1 and continue to have issues as I write this even after extensive bulletproofing... I also now own a 2014 F350 6.7 (company truck)and it has been troublefree so far (knock on wood)... I'm considering cutting my huge losses on the 2004, dumping it, and replacing it with a 2015/2016 F350 King Ranch 6.7. I'd be starting over with plans to make it offroad worthy(gears, lockers, winch, lift, tires) to be used as a hunting truck with Travel Trailer towing duties in the Colorado high country also... Question is, are the 6.7's enough of a better engine vs. the 6.0 to consider this plan, or should I be looking harder at the Chevy Silverado or GMC Sierra Denali's with the Duramax and Allison's...? I get the employee discount (wife) on Ford's so that is a huge consideration when purchasing new...
 
#3 ·
My 2003 F250 had little engine problems. Was I lucky, I don't know. I hear all of the bad-mouthing about 6 liters and then I got my 2012 F250 6.7l. Nothing but problems from the start. One sensor after another going bad. Then, got stuck in Texas a week before coming home with more sensors. They had to get into the engine to replace something, broke screws, screws only used in that years model, became a hanger queen. Traded for a 2016 F350, which I'm very happy with and knock on wood, no problems yet. So, luck of the draw, you tell me.
 
#4 ·
Buy a 6.7 ford, or dodge, dont look back..
 
#5 ·
Even my early 6.7L (2011) has been relatively trouble free (knock, etc.). I have had one DEF sensor thing replaced under warranty. I have a light now I need to get checked, but I have no complaints about this truck. It's been great.
 
#6 ·
Imo, any year 6.7 is better than the best year 6.0......

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#7 ·
This. The 6.7 has had some sensor issues and the fuel system is very sensitive but come on, this isn't even close.
The problem is Ford not standing behind their product more than anything. The radiators and water in fuel BS would be a non issue if Ford treated their customers better.
 
#9 ·
Here's how the hell its Fords fault. If a teaspoon of water is going to take the pump out, then the water in fuel sensor should be sensitive enough to detect it and the water separator should be efficient enough to separate it. Unfortunately, the emulsified water gets right by the separator, never triggers a WIF light and takes out the pump even with religious filter maintenance.


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#10 ·
Totaly agree, if Ford gives you a water separator and 2 filters, and a light to tell you you have water, and non of it does the job and water gets buy and causes many thousands of repairs, HOW would that be the truck owners fault???????
 
#12 ·
One of very first 2011 Job 1 trucks, May 2010 delivery...problems 1. one exhaust sensor change 2. At about 80k miles engine fan would not shut of after exhaust brake use. It would run for several days at a time then shut off and operate properly, then come on again when exhaust brake used, Several trips to dealerships that agreed there is was a problem but could not find problem, suggested I change fan at my cost to see if it fixes issue, customer service involved and Ford CS was absolutely no help even though was under warranty (100k engine and bumper to bumper 6 year 120k mile premium), problem resolved itself a little over 100k miles. 3. 98k miles left front brake lock up, fixed under warranty, dealership did brakes all around. 4. Early on, dash lights stayed on 24 hrs/day for about a week, healed itself. Truck has been used exclusively for towing 8-10 trailer, no grocery getting or kid transporting. Generally satisfied with truck, not with Ford Customer Service though...that was actually Ford non customer service.
 
#17 ·
We hava 2011 6.7 F350 Lariat FX4. We have had only 2 problems. 1. we put larger all terrain tires on it, it made every light in the dash come on. 2. ford dealerships said there is nothing they could do about it, the third had it taken care of in 15 minutes. 2. small radiator leak (typical), put a little radiator stop leak in it and hasn't leaked a drop since. This truck is a daily driver and gets used on the farm pulling 12k of tractor and trailer a couple times a month and 6k of boat every weekend during the summer. Besides the tires and a leveling kit the truck is all stock. 80k miles on it so far and its a great truck. We got one of the good ones apparently. Im still not a fan of DEF/DPF but once you get in the 6.7 you will never miss your 6.0 L . Just my $0.02
 
#18 ·
If you are looking for trouble free I don't know if any one makes that truck, I have 2 ford 6.7L a 2011 & 2012 both have over 125000 km on them if you take the time and really learn the dpf and egr systems there not bad just a lot of maintenance I am cleaning the egr cooler and valves on mine the one was not bad but we really work then and not much idle time that is the 6.7L killer they are not a truck to idle it plugs up the egr cooler
I have had very little problems broke a passenger side mirror on a building plowing (chrome mirror) did not know you need the little temp censer broke the dpf system with mirror and dpf repairs $2500 they are not cheap to fix.
 
#21 · (Edited)
And I haven't seen issues on the 6.7 that were related to blown head gaskets, injectors stuck open melting a cylinder, leaking hpfp, egr coolers rupturing, oil coolers clogging, heads having spider cracks, egr valves failing, ico/ipr causing crank no starts, ficms going bad causing hard or no starts like the 6.0, turbos blowing and turbo vanes sticking (I'm sure I'm missing about a dozen things from the list).

There have been PLENTY of 6.0s that needed short/long blocks to the tune of $5,000-10,000.

Quit trying to make it sound like the 6.7 is such a piece of crap when it is by far the best motor after the tried and true 7.3.
 
#20 · (Edited)
In regards to Richoman, There are ones that gave no issues so far and it's good to hear of good ones as that is part of the spirit of this place. It's not just supposed to be all problems and conflicts. We all know the feeling of really enjoying ones truck and wish all had it so it's always good to hear of satisfaction and successful service.:thumbsup:
 
#22 ·
No you did not read and understand. My statement listed what I have not seen a 6.0 do.
I have seen them do the things you listed and drives home the point that all those issues can be adressed ahead of time with a 6.0 for about half of what a 6.7 fuel system redo will cost.
Please do not tell me what to do or not to do.
I'm am glad you are happy with yours though.
 
#23 · (Edited)
I fully understood EXACTLY what you were saying.. And once again it was a post about how much of a piece of crap the 6.7 is based on the expensive repairs that some members have had to pay (or their insurance). There have been more rods thrown on a 6.0 then bearings spun on a 6.7. So I guess that makes the 6.0 a piece of crap too.

And what I am saying is that there are MANY more 6.0 owners that have paid MUCH more with MANY more failures then the history of the 6.7.

And yes you can take care of many of the 6.0 issues NOW but MUCH of this was not known in 2003, 2004 and 2005. You go to any 6.0 forum and they are full of issues all over the place.

I don't think you have ever made 1 positive post about the 6.7.

Cheers
 
#25 ·
I'm all for getting along and hearing of people that are happy with their truck, truly I am.
If in a thread such as this when somebody is considering things, I will point somethings out.
If most people read the internal intra office emails that are now out there on the collection system used on 6.7 trucks and they had a failure that resulting in a fuel system repair bill with 2 digits to the left of a comma, most of them would be livid. You spent $600 something on Dieselsite's filter set up and that makes you feel secure. 99.9 percent don't purchase and install aftermarket pre fuel systems.
Spinning bearings, low life turbos, snapping cranks without lugging, a high pressure fuel pump that Bosch says without the proper additives will result in a dramatically shorter service life. Those are their words not mine and that info can be found by googling Bosch's stance on American Low Sulfer Diesel.
Prospective owners all have different needs, finances, expectations and comfort levels. They should not be kept from all that info so they can make their own choice.
Improvements and change come from findings in the field,customer and mechanic feedback and sometime customer push back. Your content and secure, that's great, ultimately it's good to see the owner feel that way.
Prospective buyer of any engine, I'll point out things. It's the nature and spirit of a technical forum.
Ok, Good talk, smell pit beef stand.��
 
#29 · (Edited)
But Dodge/Fiat/Ram isn't having the fuel problems that Ford is having. The question remains, why is the Ford system either A) so sensitive that it can't handle a little moisture or B) can't be built more robust to compensate for the fuel.

I remember reading a while ago that Bosch stated that their pump that Ford spec'd out does not meet the requirements to handle the poor quality fuel in the US.

I will state again, I'm not defending Ford for every issue.. I truly believe that if there are rusting parts and that they can't prove water in the tank, their is not DEF contamination or the WIF light hasn't come on that Ford SHOULD pay for the repair.

That is first... second, Ford needs to fix the damn radiator problem (this is one reason I bought an ESP for fear of this).

My guess is Ford's fix is a new radiator style and mounting system for the 2017 which leaves all the 2011 - 2016 owners high and dry.

But I'm so tired of reading the comments from certain people how much of a POS this motor is. This motor OVERALL is a fantastic motor (radiator and EGT sensors (EGT has been resolved) have nothing to do with the motor itself). Take the fuel system out of it (again, I admit that it needs to be fixed) and what do you really have to complain about on the 6.7??? Answer - NOTHING.

With a 6.0, if one wanted to bullet proof it, you could spend anywhere from $5,000-$10,000 to do that. IS that fair for the 6.0 owners?

Nope!! I'm one of them.. 2 HG failures, 1 EGR failure, 2 EGR cooler failures, 1 oil cooler failure, 1 FICM failure, 1 injector failure and that was just the motor never mind the interior electronics. I loved my 07 despite that but damn.. I'm glad Ford went to the 6.7.

Enough said.
 
#27 ·
Actually many others use them also.
Even vw.

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#30 ·
Yup and VW was having the issue as well with the pumps going BOOM. It's not just Ford. But see my previous post.. why can't Ford have Bosch spec a pump to be made better for our fuel standards. That is the million dollar question.
 
#28 ·
Back to the OP's question. IMO the 6.7 is a better engine than a 6.0. Most of the problems with the 6.7 are related to the emission system. The big trouble Ford had with engine failures were with the 2011 early builds. Some issues with valve failures leading to catastrophic engine failures. Other than that it seems the 6.7 is pretty solid and the torqueshift 6 has proven to be a beast of a transmission. That being said when there is a problem with the 6.7 it's going to be way more expensive to repair. When there is a fuel system failure it will be around $10K to repair but all the modern diesels are going to deal with this. When I was considering buying my truck I read up and asked questions on this forum. I was worried about the reliability of the engine and stated that. I don't remember which member here pointed out what the small percentage of failures there were. He said not to worry about the negative stuff because the problems were so few. That was 4 years ago and I don't regret buying this truck at all. I have had a few minor problems with mine including a reoccurring exhaust fluid system fault and a leaking evaporator core. The evaporator core was out of warranty and Ford paid for almost all of it and I am optimistic that the DEF problem has been resolved at no cost to me. If I had known then what I now, I would still have bought the truck, just from a different dealer.
 
#32 ·
It's solid till the non painted block has rust creep in on the freeze plugs, or until the host of other major issues come up.
They started that no paint on engine deal with economy cars like the escort and now they do it on this diesel.

I have said positive things about the 6.7 you get upset if it's not rah rah.

Improve or scrap, People, companies and municipalities are flipping over to Dodge and in a lot if cases going to gassers.
 
#34 ·
I think you answered your own question.... But yes the 6.7 PSD is a much more reliable engine than the 6.0 PSD of any year.


And this is from an owner of previous trucks powered by the 7.3 PSD, 6.0 PSD and my current 6.7 PSD with 92k miles and has been to the shop once last year for a emission recall flash that took ~ 1 hour to perform.
 
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