Common issues with Dodge 6.7L or Ford 6.7

[kincade]

Hoping to solicit some of the collective advice from the gurus on the forum about a new truck purchase. I've been lucky to own a few great trucks: 2001 7.3 powerstroke, a 2007 LBZ duramax, and just sold a 2003 cummins 5.9. All were great vehicles and I've been looking for similar replacements with lower miles. However, the only similar model trucks in my area with low miles are priced the same as the new vehicles and come without many of the amenities. Supply and demand I suppose.

In any case, I figure for similar pricing I should look at the Dodge 6.7 and Ford 6.7. I'm wondering if either have an achilles heel that should be watched for or checked out prior to purchase?

Thanks for any guidance you can give.

I'd appreciate everyone keeping this civil. This ISN'T a what truck is best kind of post. I'd simply like to know about the common issues to each model and what to watch for.

[N-Trouble]

The Mad Norsky wrote:

Shoot, GM Duramax has been through many different versions of that motor. Ford sure seems to have a winner with this current model 6.7L.

Many of the Dmax revisions were driven by federal emissions standards and ability to increase output numbers. Business as usual... In Fords case however they have had to go back to the drawing board multiple times (6.0/6.4/6.7) with entirely new engines because the prior was a turd. Yes they finally have something respectible with the current 6.7 but look at how long it took them to get there...

[The_Mad_Norsky]

If memory serves me, part of the occasional problems with the early (2011 in particular) 6.7L Ford was the ceramic bearings in the turbo.

Why ceramic, I have no idea, but they'd fail after so many miles and really make a horrible sounding noise. Various videos (as in PowerStroke help for one) showed most of these failures were in trucks over the 100,000 mile mark.

The newest (2015 plus) engines have many improvements, which, according to all reports and forums I've read, indicate a much better version 2 engine. And that is great for both Ford and their owners.

Shoot, GM Duramax has been through many different versions of that motor. Ford sure seems to have a winner with this current model 6.7L.

[Turtle_n_Peeps]

What year are you looking at? Yes it does make a difference:

Common 6.7 PowerStroke problems 2011 to 2014.

#1. Turbo inbalance problems blows the turbo up.
#2. Bottom end bearing problems. (No bearing tang, (rare))
#3. CP4 HPFP taking out the whole fuel system.
#4. Valves falling off of their stems taking out the whole motor.
#5. Valves sticking in their guides.
#6. Glowplugs falling off in their cylinders trashing the motor.

In 15 Ford fixed a lot of big problems. The turbo problems came to a dead stop. They just don't have them anymore. They also seemed to put better valves and glowplugs in their engines. The CP4 problems have slowed down a lot also. It's too early to say if all the problems have been fixed. Only time will tell.


Common 6.7 Cummins problems.

#1. 07/08 has lots of turbo oil tar problems gumming things up.
#2. 07/0?? had head gasket problems.

[Perrysburg_Dodg]

Yep bottom line all trucks fail....will except one members truck anyway :W. It is how the dealer and the company handle the repair that will make or break them. I didn't have a issue with my Ford's having to go in to the dealer. That is why they have a warranty.

My issue was with their dealer network. The only Ford dealer (at the time) that gave me great service was Tri Motor Sales in Oak Harbor, Ohio. Every other Ford dealership was a joke. With that said the GM and Chrysler dealerships in Toledo were no better! They all took your money and didn't care about you after that. I had one flat out tell me if you don't like it go some where else.

If you find a dealer that takes care of you stay with them. That's what I have done. Al Smith in Bowling Green, Ohio is the best dealer bar none in NW Ohio. That is why I buy Chrysler products not because I work for FCA. I started buying Chrysler's long before I went to work for them. I can get EP pricing though my DAD for any GM if I want and if Al Smith were to close there would be GM's in my driveway. Why because of the dealers in my area.

Don

[Me_Again]

blofgren wrote:
There was a guy with a repair shop that posted recently about quite new Duramax and Powerstroke trucks with CP4 failures so as much as they maybe aren't as common as they once were they still do exist.

And I'm not trying to bash the Ford or the GM but this is an issue a prospective buyer should know about and decide whether or not they are willing to take the risk. Personally I wasn't about to take the risk especially with the further risk of Ford not covering the failure under warranty but that's just me. 🙂

There is a difference between the failure of a CP4 on a Ford vs a GM, in that GM quietly just warranties it while Ford may try to blame the failure on the user and bad fuel that they put in it. Not smart on Ford part! After the 6.0 and 6.4, Ford would be much smarter to have the best warranty in the world on their 6.7! Thank you for driving a Ford, here are your keys!!! Drive ON!

Chris

[blofgren]

There was a guy with a repair shop that posted recently about quite new Duramax and Powerstroke trucks with CP4 failures so as much as they maybe aren't as common as they once were they still do exist.

And I'm not trying to bash the Ford or the GM but this is an issue a prospective buyer should know about and decide whether or not they are willing to take the risk. Personally I wasn't about to take the risk especially with the further risk of Ford not covering the failure under warranty but that's just me. 🙂

[jus2shy]

Cab lifting can happen on the HD Rams as well. There's 1 oil fitting that's pretty impossible to get to otherwise at the back of the cylinder head. But it's an extremely rare failure point on the motor.

But I've seen cab-off on all 3 vehicles. It's just that it was far worse on the 6.4 equipped Ford which made it more SOP. All 3 can have just about everything done cab-on now a days. Even the Ford 6.7 can have its heads replaced cab-on, but since Ford built the cab around easy removal for the 6.4, if something serious is required, they will just remove the cab to get at the engine/trans setup more easily.

[Perrysburg_Dodg]

Don't you have to pull the cab on the GM twins for anything major also?

They lift the cab on the Ram Ecodiesel for anything major. That would be why I bought the bumper to bumper extended warranty for 125,000 miles!

Don

[spoon059]

OP, honestly any of the big 3 make a great truck that will likely pull your trailer with ease. I went with the best price, which also worked out to be the only truck with the older fuel pump and less chance at trouble.

As others have stated, the problems with the fuel pumps have pretty much gone away. I don't think any 2016 truck has any real "issues" per se. If I was buying right now, I would take a real hard look at a leftover 2016 Ford 6.7 mainly because the redesign in 2017 will likely cause massive discounts on remaining 16's.

[spoon059]

SoCalDesertRider wrote:
...and Toyota beats them all, while hauling a truck camper and pulling a fifth wheel, and a boat, with the A/C on and the wife wearing a moo-moo! 😛

Darn right!!!

[45Ricochet]

kincade wrote:
Thank you all for the constructive posts. Just to clarify, this ISN'T a what truck is best kind of post. I'd simply like to know about the common issues to each model and what to watch for. And thank you all for telling me about this.

So the 2013+ Cummins 6.7's went to a DEF system and that seems to be more reliable and get better mileage. Were the 2007-2012 problematic? 2008-2010 they all had emission related issues. 2011 MY forward is what you what to shop for. Even then Ram waited till 2013 to use DEF or SCR emissions.

I've found a few 2011-2012 6.7 PSD's around me for a good price, but the mention of the high pressure pump issues spook me out a bit. Are the issues random? Yes pretty much a small percentage for Ford and GM. But the earlier 2011-2012 I would avoid as those seem to have a higher ratio fail rate than the newer MY's.

Thanks again.

[Bird_Freak]

I only have real knowledge of the 2015 Fords. I don't mean what I read or what my 3rd cousins brother in-laws nephew said but what I see every day. we have 2 2015 F350's running out of my shop. Both well over 200K miles and not the first problem.
Haven't heard or seen anything bad on the Cummins either.

[1jeep]

had a 2011 with over 110k miles and my current 2016 both with the 6.7 and neither with any issue, both stock.

Theres a post on here about a cummins with an issue, but it doesn't mean everybody with one will have that issue either. However while your researching the ford issues I would dig in deeper to see how many are tuned....I bet that's where a lot of the issues derived from.

[BigToe]

For the 2015 and up Ford 6.7L, search the internet for "jackhammering" "jackhammer" "exhaust valve" "replacement" "build up" "cab off" "head removal" in various combinations with the terms "6.7L" and "Ford".

Even if you limited your reading to only what has been posted in just the last 60 days, there is enough chatter about this issue to keep you busy reading for a week.

[Bird_Freak]

I know of no real problems with either. What's a Dodge?