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Improved CP4.2 Pump?

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Old Dec 12, 2024 | 05:20 PM
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Improved CP4.2 Pump?

So been hearing some rumbling about the upcoming 2025 6.7 Cummins and that it is supposed to receive a new improved HPFP. Well, that new pump looks like a CP4.2 pump so now I'm interested what improvements were made, since this version of the CP4.2 could possibly be implemented by Ford.

Enjoy...

 
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Old Dec 12, 2024 | 09:43 PM
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Starting in 2020 the cp4.2 pump ford uses has pins in the cp4 that prevent the cp4 cups from rotating.

this hasn’t stopped failures related to foreign matter or dry starts


 
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Old Dec 13, 2024 | 09:09 AM
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Nice post Troy... I'll have to watch when I get a chance.

I'd really like to have a grasp of percentage wise, which will never happen as Ford holds them close, of the amount of failures of CP4s.

While I acknowledge this can happen early on in an engines life to far out to hundreds of thousands of miles. I talked to that mechanic friend of my mine this morning at my buddy's shop and his 15 (IIRC) truck has 280k miles with what appears to be the original CP4.

Troy, I know your truck has close to 300k miles with the original CP4. So it is possible... is it fuel, additive use and/or luck? Who knows?

All I know is i feel much safer now with the S&S kit on now...
 
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Old Dec 13, 2024 | 11:25 AM
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Originally Posted by speakerfritz
Starting in 2020 the cp4.2 pump ford uses has pins in the cp4 that prevent the cp4 cups from rotating.

this hasn’t stopped failures related to foreign matter or dry starts
The 2019-2020 Ram cummins version of the CP4.2 had pinned buckets too, but that pump was such a disaster they went back to the CP3 pump in 2021, so I'm thinking there are some new changes to the CP4.2 that they're implementing. I think this new version of the Cummins is to recover from the black eye they got from the original CP4 pump, the CGI block that would warp, and the lifter failures. Having said that, going back to a version of the CP4.2 pump, they better get it right this time since they had to pay to replace those CP4.2 pumps on every 2019-2020 Ram truck with a CP3 pump
 
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Old Dec 13, 2024 | 11:56 AM
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Pretty sure the Ram CP4 problem was fuel supply issues.

 
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Old Dec 13, 2024 | 01:09 PM
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Originally Posted by longhaultransport
Pretty sure the Ram CP4 problem was fuel supply issues.
It was overdriven too and they were dropping like flies.
 
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Old Dec 13, 2024 | 02:56 PM
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Originally Posted by Overkill2
I'd really like to have a grasp of percentage wise, which will never happen as Ford holds them close, of the amount of failures of CP4s.
Since the 6.7 was introduced in 2011 it is estimated that over 2 million have been produced, the production plant has a reported capacity of 200,000 units per year. I believe that the failure rate is in the single digits since a 10% failure rate would be 200,000 units and with that many failures I think that there would be a huge clamor for a recall. With about 3000 Ford dealerships in the us, if the failures were evenly spread, each dealership would have seen 67 failures. My local dealership, which is a commercial vehicle dealership has not seen anywhere near that number. A 1% rate is still a big number at 20,000 units, but it is probably close to the failure rate.
 
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Old Dec 14, 2024 | 06:47 AM
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Originally Posted by Strider250
Since the 6.7 was introduced in 2011 it is estimated that over 2 million have been produced, the production plant has a reported capacity of 200,000 units per year. I believe that the failure rate is in the single digits since a 10% failure rate would be 200,000 units and with that many failures I think that there would be a huge clamor for a recall. With about 3000 Ford dealerships in the us, if the failures were evenly spread, each dealership would have seen 67 failures. My local dealership, which is a commercial vehicle dealership has not seen anywhere near that number. A 1% rate is still a big number at 20,000 units, but it is probably close to the failure rate.
I don't believe the failure rate is the problem, all parts fail and we are all use to replacing failed parts. The issue with CP4 failures is the damage done to the entire fuel system.

Replacing a $1500 pump is straightforward and not too difficult a job. What leaves a bad taste; all the injectors are trashed, along with fuel rails, dropping / cleaning the tank, etc. The time and cost for a simple pump failure is?!?

You would 'think" (though maybe that is beyond the scope), that FORD after 15 years, would have developed a solution to prevent the catastrophic damage. If an 'aftermarket' DCR can fail without complete destruction of the fuel system, why not a Billion dollar car manufacturer?

Since almost all the failures appear to occur outside of warranty coverage and they continue to sell millions of trucks, it would seem not enough noise is made (by owners), vs the dollars made by FORD selling parts.
 
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Old Dec 14, 2024 | 08:42 AM
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Originally Posted by scottu5
I don't believe the failure rate is the problem, all parts fail and we are all use to replacing failed parts. The issue with CP4 failures is the damage done to the entire fuel system.

Replacing a $1500 pump is straightforward and not too difficult a job. What leaves a bad taste; all the injectors are trashed, along with fuel rails, dropping / cleaning the tank, etc. The time and cost for a simple pump failure is?!?

You would 'think" (though maybe that is beyond the scope), that FORD after 15 years, would have developed a solution to prevent the catastrophic damage. If an 'aftermarket' DCR can fail without complete destruction of the fuel system, why not a Billion dollar car manufacturer?

Since almost all the failures appear to occur outside of warranty coverage and they continue to sell millions of trucks, it would seem not enough noise is made (by owners), vs the dollars made by FORD selling parts.
I don't disagree with you, it is a bad design. Probably at the behest of their lawyers they did not create their own DPK. I was just responding to Overkills comment wondering about the failure rate.
 
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Old Dec 14, 2024 | 10:23 AM
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Originally Posted by Strider250
I don't disagree with you, it is a bad design. Probably at the behest of their lawyers they did not create their own DPK. I was just responding to Overkills comment wondering about the failure rate.
Hi Strider250,

I agree 100% with your post about the failure rate (being low) 👍, I was just adding (to your post) that even though the pump (design?) may be poor (and failure rate is proportionally low), it wouldn't bother many of us if the pump was all that failed, vs the whole fuel system and the huge amount of labor involved in repairing.

Sorry for any misunderstanding!
scott
 
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Old Dec 16, 2024 | 12:03 PM
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when I bought my 2010 6.4 which had 80K or so miles on it...I changed all the fluids and filters as soon as I got home. found what looked like vasoline in the engine bay fuel filter and it had glitter in it. the pump still worked for the 10K or so miles I had the truck for. the 2010 had a cp4. point being as it relates to the 6.7 is that while the numbers of total failures COULD be low....the numbers of impending failures are going to be significantly higher....meaning...all the pumps out there wearing away due to low sulpher fuel or fuel geling. I would agree that under idea conditions, most cp4's last the warranty period with out fail..but...are they wearing out super fast.

some folks have 200k plus miles on them and no problems...some recent year trucks with less than 30k have cp4's that kicked the bucket.


the problem most people haveis instead of ford warranting those failures becuase ford knows they put a box of rocks out there...ford spends a lot of tiime doing secret chants and voodoo dances to deny claims. my favorite is a sensor in the fuel system made of pot metal instead of stainless steel....its a check point for rust...and if it rusted...denied.
 
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Old Dec 16, 2024 | 12:14 PM
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Originally Posted by Strider250
Since the 6.7 was introduced in 2011 it is estimated that over 2 million have been produced, the production plant has a reported capacity of 200,000 units per year. I believe that the failure rate is in the single digits since a 10% failure rate would be 200,000 units and with that many failures I think that there would be a huge clamor for a recall. With about 3000 Ford dealerships in the us, if the failures were evenly spread, each dealership would have seen 67 failures. My local dealership, which is a commercial vehicle dealership has not seen anywhere near that number. A 1% rate is still a big number at 20,000 units, but it is probably close to the failure rate.
With that comment, I was not referring to a high percentage as I wouldn't know but obviously we do know that pumps can fail and not just to user error.

An old Ford tech who now works at my buddy's shop IIRC said that he didn't recall a lot of them either.

One also has to wonder how the failure rate is in Europe as the pump was made there and that Euro ULSD has more lubricity in it than US ULSD, from what ive read if even true.
 
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Old Dec 17, 2024 | 07:54 AM
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Originally Posted by Strider250
Since the 6.7 was introduced in 2011 it is estimated that over 2 million have been produced, the production plant has a reported capacity of 200,000 units per year. I believe that the failure rate is in the single digits since a 10% failure rate would be 200,000 units and with that many failures I think that there would be a huge clamor for a recall. With about 3000 Ford dealerships in the us, if the failures were evenly spread, each dealership would have seen 67 failures. My local dealership, which is a commercial vehicle dealership has not seen anywhere near that number. A 1% rate is still a big number at 20,000 units, but it is probably close to the failure rate.
Couple that with the CP4 is used a host of other applications, albeit with a checkered results, from automotive to agriculture. I think Bosch has made over 60 million of these things.

Originally Posted by speakerfritz
when I bought my 2010 6.4 which had 80K or so miles on it...I changed all the fluids and filters as soon as I got home. found what looked like vasoline in the engine bay fuel filter and it had glitter in it. the pump still worked for the 10K or so miles I had the truck for. the 2010 had a cp4. point being as it relates to the 6.7 is that while the numbers of total failures COULD be low....the numbers of impending failures are going to be significantly higher....meaning...all the pumps out there wearing away due to low sulpher fuel or fuel geling. I would agree that under idea conditions, most cp4's last the warranty period with out fail..but...are they wearing out super fast.
Just to split hairs here, the 6.4 had a Siemens based fuel system so that was a K-16 pump. Still had the same nasty habit of dissembling itself and littering the fuel system with the forbidden glitter. It was a monster of a pump, IIRC could out flow the CP3 by 20% or so but the fact Navistar put in the back of the engine added insult to injury.
 
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Old Dec 17, 2024 | 04:49 PM
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My 2016 had 330k on it when the CP4 failed. I was the original owner and never used additives. However, I think I was really tempting fate. I’ll convert my 2020 sooner than later though just for the peace of mind. Nothing worse than a catastrophic failure while out of town, and during the COVID parts shortages no less. I’d rather spend 2k on my terms than 10k at some unforeseen point in the future. I know I’ll have this truck for awhile.
 
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Old Dec 18, 2024 | 06:00 AM
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It wasnt until my first CP4 failed that I even knew it was something being discussed. Im sure the majority of used truck purchasers just dont know about the CP4s reputation and the majority of new truck purchasers feel safe with a warranty and will be out of the truck before or shortly after it expires.

I purchased two 2016 and one 2018 powerstroke without even knowing. After losing the CP4 in both my 2016 trucks I hit the internet and there it was all over the place lol. Too late now but the 2018 is still chugging along with over 200k on the original pump.
 
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