My point is that for every Ford ******** like that guy, GM and Ram have one too (maybe more, lol). Statistically, we should therefore see as many reports of CP3 and HP4 failures. We don’t.

 

And like I said above the CP3 is more robust no doubt, but my point is how many of these failures of the CP4 are from people doing this kind of thing. Just because the CP3 could tolerate more abuse does not mean you should abuse it. I’m on my third 6.7, put over 350k miles on the first one over 250k on the second one mostly towing at around 9-10 mpg so that is a lot of fuel through them with no issues. My third was bought the last week of April and has 4800 miles on it so it is too early to tell.

 

Blaming the owners for the CP4 problems is not a good look.

 

Most CP4 pumps have been replaced due to DEF or gas contamination over the years. I believe the DEF contamination has dropped off significantly since most now know it doesn't go into the fuel tank.

 

If owners are so dumb they can't tell DEF from diesel, then the same issue should have been big with CP3 and other pumps. Not a good look for PSD owners to need that long of a learning curve to tell diesel from pee water.

Unlike you I don't blame the owners as much as Ford's insistence to keep using CP4 long after GM and Ram both ditched it.

 

No doubt, it would be nice of Ford used something other than the CP4, however at least they didn’t screw it up as bad as GM and Ram did.

As for running out of fuel or pumping DEF or gas into their diesel tank, how is that Fords, or the CP4’s fault. Too many people want to pass the blame rather than assume some responsibility.

 

I honestly don't see how you can get the def and diesel mixed up .

I can see gas vs diesel but only at BP stations can I see this overlooked.

 

So I guess it is Fords fault that this guy in the video did multiple dry starts on his fuel pump?

 

I can see how folks could not be paying attention and end up with the wrong thing. A buddy pulls up next to them at another pump and their talking… they are on their phone… they have had a really bad day with things on their mind… they’re really excited about something and in a hurry… they’re filling up multiple vehicles at once…

But this is user error and still doesn’t make it Ford’s, or the CP4’s fault.

 

I do not doubt DEF and gas in the fuel tank, running the truck out of fuel, and dry cranking the CP4 have and do occur. But let me try again. There are more reports of CP4 failures than CP3 and HP4 failures combined. It’s so stark that CP3 and HP4 failures are basically non-issues. This leads mean to one of two conclusions.

1. Ford owners are more distracted or less educated about their trucks.

or more likely

2. The CP4 is inherently less reliable than the CP3 and HP4.

The same thing happens with the 7.3 lifter failures. So many dismiss them as just acceptable rates of failure. IMHO, both are real problems that tarnish the reputations of otherwise good engines.

 

Everthing built by man will have a possible failure rate. Even with every manufacturer having issues in the build/ assembly quality or parts everything still sells just some whine louder than others. It seems not many want to go back to riding horse and carriage.

 

or

3. The CP4 is more susceptible to damage from mis-fueling than the CP3 and HP4.

 

Number 1 is a silly comment that can't be taken serious.

And I don't think anyone is arguing about number 2... or maybe they are.

Clearly, the CP4 has much tighter tolerances and requires a higher standard in order to stay operational than the other fuel pumps. When it is working as intended, it's a great pump, but that doesn't mean things don't happen with them (or any other pump). There are always dud's, no matter what the item is. Like mentioned here, I believe many of the CP4 failures ARE related to user error, as evidenced in the video posted above. This owner even stated that he had ran out of fuel a couple times before this time. Due to his own negligence, his pump is most likely on it's way out, and it will now be a result of the way he has not followed proper operating instructions (running the truck empty, not pressurizing the system before trying to crank it) rather than an actual defect in the pump itself. And when it does fail, these times that he improperly used the truck/CP4 won't be remembered, but it will be said that it failed simply because it's another CP4. Just because the HP4, the CP3 and the CP4 are all fuel pumps, doesn't necessarily mean that you can treat them all the exact same way... All parts can fail, and they all have certain parameters they are intended to operate in. If the user goes outside of these specific parameters even once, that could lead to a failure that may not have happened at all. With any of the fuel pumps. But I agree, the CP4's don't like it near as much as the others.

Saying that, I do wish that Ford would use something else, because I agree that just like with the 7.3 lifters, these parts are what people think about now when these motors come up. I am happy that there is finally an aftermarket replacement pump for the CP4. I am also happy that Bosch finally started pinning the pumps going in the 20+ SD's, and I am happy that I put a DPK on my own truck early on. But, if the CP4 does go out, I will be going back in with a DCR. I don't fault the entire motor for that though.

 

I supposed Ford being number one in recalls and warranty repairs several years running is just possible failure rates with some people whining louder than others.

 

Wait…you just said number 1 is a silly comment that cannot be taken seriously, and then you went on to say number 1 is what you believe most CP4 failures ARE related to.