Does the 2022 6.7L power stroke have a CP4 high pressure fuel pump problem? Or, has Ford fixed this for MY2022?

A quick search for CP4 in this forum shows the most recent posts dated early 2021. I am shopping for a new truck and want to know if this is a concern.

Thanks

 

The 22 6.7 Powerstroke has the Bosch CP4.2. It has been modified through the years to increase the amount of fuel with the later higher power ratings.

There's nothing to fix IMO (sure the rollers could be pinned in their respective bores in the pump body) but with that said, you have to realize it's a potential problem that can happen but that does not mean it will.

Yes, you came across threads here where the CP4.2 has blown up but like with any modern high pressure common rail diesel engine, bad fuel would not be good for any modern day diesel engine's fuel system. People who own modern diesels have to cognizant of the fuel they use and the maintenance of the fuel system.

Yes, GM did switch to the Denso HPFP away from the the Bosch 4.2 but like I said, bad fuel could or would potentially cause damage to the Denso system as well.

Yes, I have an S&S DPK 2nd gen kit on tap to install on my 6.7 but this is to prevent total fuel system contamination if or when my HPFP goes as I am going out past the warranty period of 7 years or 125k miles. If you keep in mind where you buy fuel, drain your filter/water separator and potentially use a fuel additive that you are comfortable with, you should be fine. But yes, the possibility of a fuel system problem due to bad fuel is always a potential problem due to the high pressures now used and smaller tolerances in the fuel injection system also.

Just my take on it.

 

It still is susceptible to water/def damage like it was from the very start. The pump itself is good, does everything it is asked to do, but has one inherent flaw that is easily overcome, which is what puzzles me why Ford doesn't just do it, and thats to separate the pump crankcase from the pump heads itself like the DPK does. If the pump gets water or DEF in it, it can cause the cam to corrode, which leads to the coating flaking off and grinding itself to bits. The real problem begins when the fine particles make their way into the pump head, through the HP lines and into the injectors, and thats when the real expensive damage happens.

Regardless of what year truck, this is the Achilles heal of the CP4.

Keep the fuel clean and dry, add lubricants like Hot Shots or similar with every tank for added protection, and buy from places with high turn around for Diesel. Whatever you do, DONT leave the fuel cap off when filling the DEF tank! For added insurance and peace of mind, install a DPK like SPE or S&S.

 

for most CP4 potential problems there is a risk mitigation and/or damage control option. get rid of the water, air, contaminate particles, keep pump lubed, etc.

unfortunately, for "service station pump gave me gas instead of diesel" there is only damage control...aka DPK kits.

 

Unfortunately, it is still a CP4. That evidently can not be changed. Ford is the only one of the big 3 that insists on using it. And I personally can not fully trust it after the fiasco I had with my 2015 F350 DRW. But to all those that never have a problem, good for them; and I feel sorry for the few that do.

 

Useful input so far. I eventually found this thread:

https://www.ford-trucks.com/forums/1...cp4-issue.html

which provides more info and opinions

 

It's still the one main reason I would never chance owning a newer one. Too bad because they are nice trucks otherwise.

 

Disaster prevention kit is $450, if the pump actually fails it costs ~$1000 to replace. Whether or not it fails is TBD. $1450 to replace the pump (including the DPK cost) if you can do the work yourself, even cheaper. Not much different than owning a 7.3 that has an hpop failure.

 

There are other reasons too but the fuel pump itself is just a bad design compared to the CP3. They take no responsibility for it and therefore I won't either. Just a personal choice.

 

A lot of hype about them being terrible pumps but they do perform very well. If it wasn't for the contamination issues when one goes out noone would be talking about them. A lot of 250k+ mile trucks out there with the OEM cp4.2 as well. The 6.7 needed a boogyman because without something to point a finger at people would have to admit it is one of the best diesel engines ever built.

 

From my understanding they are great pumps… but super picky about the fuel that’s fed to them. If you get lucky and get clean fuel with adequate lubrication added you’ll have no problems… but if you get less than ideal fuel, it’s not happy and can take out the entire fuel system at once. Because of this some of us have added a disaster prevention kit which (despite its name) doesn’t protect the CP4 pump, but the rest of the fuel system. So yeah, the pump is great, but you just never know about the quality of the fuel you are pumping into the truck. That’s the issue.

 

You might be able to convince someone that doesn’t know any better of this BS!

 

And there are also the trucks that the CP4 went out at 20,000 miles on them when the driver did everything correctly!

 

True that there are unfortunate people who have been in that position... I know I'm responding to one of them.

 

Okay, glad to see somebody else gets it. Although I would not call it great just based on this reality alone. CP3's rarely ever failed in this manner. CP4's? A lot of them. Facts.

It's a fragile pump compared to the earlier versions. Yes, they work fine and for a long time under the right circumstances. I know a guy who hauled RV's with his 2012 and had over 600k on the original engine. So what. One guy got lucky and never had a problem in all those tanks of fuel. That doesn't mean the issues with the pump don't exist. If Ford cared to they'd have designed their own OEM version of the disaster filtration kit and put everybody's mind at ease a little. Guys who spend upwards of $80k on a truck don't want to mess around with aftermarket DIY solutions to cover up bad engineering and/or shameless penny-pinching. It's a classic case of buyer-beware.