Lifter Failure? Report it here!

[mbarber84]

Why can't they just be honest with us and give us straight answers as it would go a long way with brand loyalty at least with me.

They are being honest with you.
They are giving you a straight answer.

From their perspective there is no known fix at this time.

From their perspective the issue is “under investigation at this time”. They quite literally know nothing beyond that.

Dealerships are the end of the line when it comes to information. Corporate gives them bits and pieces, and more often than not, leaves them in the dark the vast majority of times. In the case of the Cummins engine, this is even more the case, because Cummins themselves do a lot of the high level engineering R&D, as well as failure analysis. These things take a lot of time, especially on something as intricate and complicated as this “ticking” issue. The answers don’t immediately jump out at you. Lots of very ornate testing and analysis required just to pinpoint the cause, and then a myriad or re-design and further testing to see if the theoretical “fix” will work. Millions and millions of dollars at stake.

Nothing in the corporate automotive world moves fast. It took over a year for them to have a viable repair and diagnostic process outlined for the K1 snap ring failure issue with the 2022 Aisin transmission equipped trucks. And even longer to get a CSN program started to proactively repair trucks that hadn’t failed, or hadn’t even been sold off the lot yet.

 

[Seadoorxpguy]

Me to as well as I went through the CP4 debacle with 2 pump failures on my 2019 and that's how I ended up in this 2022 as I got so tired waiting on Ram pushing the fix out. First it was Q1 then Q2 and on and on it went and I finally said screw it and ordered the 2022.

If the dealer told me this info after they did the last repair of the rocker assemblies, push rods and crossover bridges repair and mentioned that a possible long term fix for my engine in let say Q1 2026 will be coming out I would of been Ok with that wait and been on my way. But all I got was no more repairs to be preformed at this time, case is under investigation, no known fix as of today leaving me hanging and frustrated. I asked how long could that be to get an answer and the SW told me it could take a year from Star for my case #. I'm pretty sure the fix for my engine will end up being a complete long block thou.

Why can't they just be honest with us and give us straight answers as it would go a long way with brand loyalty at least with me. The Auto Cartel just suck lately and their end goal is to frustrate you enough just to get you to purchase a new truck damn the warranty.

Mine got a reman long block. Still had some noise present. That's when they threw in the towel and the tsb was released. Doesn't matter wat engine they throw at it. If they cant figure out a root cause and keep building engines the same way the issue will still be present.

 

[BighornHDRam]

They are being honest with you.
They are giving you a straight answer.

From their perspective there is no known fix at this time.

From their perspective the issue is “under investigation at this time”. They quite literally know nothing beyond that.

Dealerships are the end of the line when it comes to information. Corporate gives them bits and pieces, and more often than not, leaves them in the dark the vast majority of times. In the case of the Cummins engine, this is even more the case, because Cummins themselves do a lot of the high level engineering R&D, as well as failure analysis. These things take a lot of time, especially on something as intricate and complicated as this “ticking” issue. The answers don’t immediately jump out at you. Lots of very ornate testing and analysis required just to pinpoint the cause, and then a myriad or re-design and further testing to see if the theoretical “fix” will work. Millions and millions of dollars at stake.

Nothing in the corporate automotive world moves fast. It took over a year for them to have a viable repair and diagnostic process outlined for the K1 snap ring failure issue with the 2022 Aisin transmission equipped trucks. And even longer to get a CSN program started to proactively repair trucks that hadn’t failed, or hadn’t even been sold off the lot yet.

There is a fix for this issue, Ram could go back to the tried and true flat tappet system that worked for what 20 years with no real issues as Cummins still makes it.

I don't really car anymore as I started on my move to replace this Ram product and unload this thing. I come from a manufacturing/designing background so if I designed a part and it's not working you either make changes fast or go back to what worked, not wait 5 years and then go Oops maybe we have a problem.

Go to 3:54 in this video as he explains he ordered a 2024 Cummins engine in a school bus with flat tappets specifically.

 

[mbarber84]

There is a fix for this issue, Ram could go back to the tried and true flat tappet system that worked for what 20 years with no real issues as Cummins still makes it.

I don't really car anymore as I started on my move to replace this Ram product and unload this thing. I come from a manufacturing/designing background so if I designed a part and it's not working you either make changes fast or go back to what worked, not wait 5 years and then go Oops maybe we have a problem.

Go to 3:54 in this video as he explains he ordered a 2024 Cummins engine in a school bus with flat tappets specifically.

The B6.7 commercial has been flat tappet all along. The chances of the Stellantis version of the 6.7 ever going back to flat tappet are about zero. They’ve already said publicly they have no intention of going back. The diesel engine industry as a whole is, and has been, moving away from flat tappet designs for many years now. There’s a variety of reasons for this but chief among them is the need for higher levels of zinc in the engine oils in order to satisfy the flat tappet contact, and maintain their lifespan. The tighter the emissions restrictions get, the less and less zinc we will find in engine oil formulations moving forward. That’s why the commercial B6.7 engine is being phased out over the next two years in favor of the newer B7.2 engine, which is DOHC. A lot of the larger displacement “X” engines are similar. Some are SOHC. Along with Cummins, other manufacturers like Detroit etc are all going to overhead cam designs. There’s some other advantages of roller lifter design that are reinforcing their decision to stick with them too, like more aggressive ramp profiles on the lobes for Faster valve actuation.

As much I love the old flat tappet engine, it’s gone and dwelling on it is a fruitless expenditure of energy.

Roller lifters and Overhead cam engines are the way forward. They just need to get the quality control tightened up. There are likely to be some pretty significant revisions to the current valvetrain being rolled out fairly soon (I anticipate the next 3-4 months). I’m guessing maybe they’re going to remove the hydraulic portion of the valve lifter, make it a solid roller lifter, change the push rods to standard style with cups at the top instead of the current ball-ends, and place adjustable rockers back at the top…which then reintroduces lash back into the system. If this happens, I think it’s going to greatly improve the system moving forward. We’ll see if my prediction holds up…

 

[56ram2500]

What is interesting on my lifter rattle is below 100° coolant temp and 85° oil temp there is no noise its smooth as glass, as soon as those temps go above 100°/85° they start to rattle to beat hell. Mind you when the dealer did the oil change 10-8-2025 they install 10w30 instead of my usual T6 5w40

In my 22 I never had any typewriter noise until about 300 miles after installing 10w30 instead of the 5w40 I had been using, after about 1500 miles on 10w30 I dropped it and went to Amsoil 5w40, around 1K later the typewriter noise was reduced, btw the 10w30 I used was synthetic oil so I assume it had something to do with using 10w30 oil vis 5w40....

 

[mbarber84]

In my 22 I never had any typewriter noise until about 300 miles after installing 10w30 instead of the 5w40 I had been using, after about 1500 miles on 10w30 I dropped it and went to Amsoil 5w40, around 1K later the typewriter noise was reduced, btw the 10w30 I used was synthetic oil so I assume it had something to do with using 10w30 oil vis 5w40....

My 2022 HO went 60k miles on amsoil signature series 10w-30 diesel. Never a tick in all that time, and I performed every oil change myself. Regular changes at 10-12k miles and UOA testing at each change. Zero ticking noises in the three years I owned it. This isn’t an issue that hinges upon oil viscosity (unless you use 15w-40 in cold climates). Neither 10w-30 or 5w-40 represent a threat to this engine in any aspect. This is a QC problem / design flaw issue.

 

[ErikTheRed]

You might be seeing some …significant…. changes to that valvetrain in the very near future. The only question I have right now is: will those changes be made available to all (in the form of a recall)?, or will it be a fix-as-fail method? I’d imagine the latter.

Firstly, let me just say that I am impressed with and thankful for your time, effort, and knowledge on this issue. Its a pleasure to read your posts, even if the subject material is not so enjoyable.

I'm curious if there will be any extension of the factory warranty where the valvetrain is concerned. Many manufacturers (including Hyundai, I own two of them) have extended the warranty coverage for certain issues if they become a "known issue". For example, my 2013 Hyundai Sonata has a lifetime warranty (so long as I own the vehicle, unlimited mileage) on the shortblock due to an oil consumption issue. To be sure, it took a lawsuit to make this happen, but never-the-less, they did it. Would go a LONG way with Ram owners if they said, "Hey, we know about this issue, and as a result, we're extending the valvetrain warranty an additional 50k miles" or something to that affect. Fat chance I know......barring a lawsuit.

 

[mbarber84]

Firstly, let me just say that I am impressed with and thankful for your time, effort, and knowledge on this issue. Its a pleasure to read your posts, even if the subject material is not so enjoyable.

I'm curious if there will be any extension of the factory warranty where the valvetrain is concerned. Many manufacturers (including Hyundai, I own two of them) have extended the warranty coverage for certain issues if they become a "known issue". For example, my 2013 Hyundai Sonata has a lifetime warranty (so long as I own the vehicle, unlimited mileage) on the shortblock due to an oil consumption issue. To be sure, it took a lawsuit to make this happen, but never-the-less, they did it. Would go a LONG way with Ram owners if they said, "Hey, we know about this issue, and as a result, we're extending the valvetrain warranty an additional 50k miles" or something to that affect. Fat chance I know......barring a lawsuit.

I wish I knew the answers to any of this. Nothing would make me happier than to be able to give everyone a guaranteed explanation and an approved way they’re going to handle it.
Unfortunately I’m completely in the dark there, and it’ll be up to the people at Stellantis to:

1. Approve & Adopt any changes
2. Determine how those changes are deployed
3. Adjust any warranty or add warranty offerings

Etc. Etc. Etc.

That’s all way outside of my arena. For all I know, they may decide to just say “screw it” and carry on as they have been doing (I sincerely hope not). I’m fairly certain there’s going to be some changes made, but it isn’t a guarantee either. Lots of bean counting and lawyer work in there somewhere I’d imagine. The unique thing is, this most recent TSB carries with it every model year. (19-26). That’s never happened before, and it’s a sign (to me at least) that they’re acknowledging the same components are in those engines (which we already knew for certain) and that they may experience some failures that are not necessarily attributable to “normal” operating conditions.

Gotta keep your ear on the rail right now. Sure sounds like a train coming but it’s a ways off yet I think.

 

[BighornHDRam]

There are likely to be some pretty significant revisions to the current valvetrain being rolled out fairly soon (I anticipate the next 3-4 months).

I wish I knew the answers to any of this. Nothing would make me happier than to be able to give everyone a guaranteed explanation and an approved way they’re going to handle it.
Unfortunately I’m completely in the dark there, and it’ll be up to the people at Stellantis to:

Alright, I'll take the heat for this and ask the question. Either you know something that Stellantis has passed on to you to keep us peasants tampered down on the forum. Or you are just speculating atm, which is it.

 

[mbarber84]

Alright, I'll take the heat for this and ask the question. Either you know something that Stellantis has passed on to you to keep us peasants tampered down on the forum. Or you are just speculating atm, which is it.

Stellantis would be the last place I would go for information on this issue. Trust me when I tell you there’s no love between that company and I. I think they’re the worst thing to happen to Ram trucks since the killer dowel pin. They don’t pass me anything.

What I’m suggesting is keeping a calm head and allowing this to play out. There’s nothing any of us outsiders can do that will accelerate the fix.

If you’d take the time to look at my contributions here, I think you’ll find that I rarely ever chime in for sport. If I’m adding to the discussion, there’s factual data backing up what I say. It just isn’t always something that can be directly shared.