CP4
Mountain Pass
Joined: Jul 2024
Posts: 136
Likes: 64
That's a fallacy .I don't let FEAR run my life.Some people do.FEAR SELLS,you're the proof
Cargo Master
Joined: Mar 2021
Posts: 2,044
Likes: 1,336
i understand the concept of the S&S kit and it has a clear, simple benefit.
no need to pretend like this is some do or die situation but if you want to refrain from posting until you have any example of what you’re speaking about I’ll patiently wait lmao
Mountain Pass
Joined: Jul 2024
Posts: 136
Likes: 64
Oh lord…..this isn’t as deep & philosophical as you’re making it out to be.
i understand the concept of the S&S kit and it has a clear, simple benefit.
no need to pretend like this is some do or die situation but if you want to refrain from posting until you have example of what you’re speaking about I’ll patiently wait lmao
i understand the concept of the S&S kit and it has a clear, simple benefit.
no need to pretend like this is some do or die situation but if you want to refrain from posting until you have example of what you’re speaking about I’ll patiently wait lmao
Hotshot
Joined: Jul 2013
Posts: 14,244
Likes: 2,179
after 10 years of blaming customer behavior as the cuase of CP4 failures...ford started to use CP4's that have pinned cups.....I think the change started 2020. pinned cups prevent the cp4 pistons from rotating and if rotated the bearings at the base of the cup dont spin any more...they just start to wear until failure.
since 2020 there have been cp4 failures and those failures put into question how effective pinning the cups really was....until ford admitted to the stale fuel problem during the covid era which resulted in cup cups being jammed with diesel tar from stale fuel because the geniuses at ford didnt use any fuel storage additive's in the trucks fuel knowing the trucks were going to sit.
now when they finally got around to starting them...the CP4 timing gear slipped since the timing gears is a press fit and some slipped to the point that the CP4's later failed...others slipped only to the point of loosing optimal fuel pump timing...so they changed the code to match the mechanical mis aligned timing gears. publicly they are saying the code change is to make the cp4's run cooler...this is by changing the metering valve threshold so that more fuel goes to the cp4 and the more fuel would be mostly unused and would basically return back to the tank carrying heat.
and oh by the way...when you put in a 2nd gen CP4 DPK you create a dedicated fuel path which sends dedicated fuel across the CP4 bearings and this fuel never goes directly to the injectors but instead always goes back to the tank carrying heat with it.
so definitely FORD...if CP4 fails are due to customer behavior...why has ford pinned the cp4 cups so they dont rotate and why is there a code change with the end goal of cooling off the cp4 bearings.
since 2020 there have been cp4 failures and those failures put into question how effective pinning the cups really was....until ford admitted to the stale fuel problem during the covid era which resulted in cup cups being jammed with diesel tar from stale fuel because the geniuses at ford didnt use any fuel storage additive's in the trucks fuel knowing the trucks were going to sit.
now when they finally got around to starting them...the CP4 timing gear slipped since the timing gears is a press fit and some slipped to the point that the CP4's later failed...others slipped only to the point of loosing optimal fuel pump timing...so they changed the code to match the mechanical mis aligned timing gears. publicly they are saying the code change is to make the cp4's run cooler...this is by changing the metering valve threshold so that more fuel goes to the cp4 and the more fuel would be mostly unused and would basically return back to the tank carrying heat.
and oh by the way...when you put in a 2nd gen CP4 DPK you create a dedicated fuel path which sends dedicated fuel across the CP4 bearings and this fuel never goes directly to the injectors but instead always goes back to the tank carrying heat with it.
so definitely FORD...if CP4 fails are due to customer behavior...why has ford pinned the cp4 cups so they dont rotate and why is there a code change with the end goal of cooling off the cp4 bearings.
Cargo Master
Joined: Apr 2021
Posts: 2,016
Likes: 749
From: Texas
after 10 years of blaming customer behavior as the cuase of CP4 failures...ford started to use CP4's that have pinned cups.....I think the change started 2020. pinned cups prevent the cp4 pistons from rotating and if rotated the bearings at the base of the cup dont spin any more...they just start to wear until failure.
since 2020 there have been cp4 failures and those failures put into question how effective pinning the cups really was....until ford admitted to the stale fuel problem during the covid era which resulted in cup cups being jammed with diesel tar from stale fuel because the geniuses at ford didnt use any fuel storage additive's in the trucks fuel knowing the trucks were going to sit.
now when they finally got around to starting them...the CP4 timing gear slipped since the timing gears is a press fit and some slipped to the point that the CP4's later failed...others slipped only to the point of loosing optimal fuel pump timing...so they changed the code to match the mechanical mis aligned timing gears. publicly they are saying the code change is to make the cp4's run cooler...this is by changing the metering valve threshold so that more fuel goes to the cp4 and the more fuel would be mostly unused and would basically return back to the tank carrying heat.
and oh by the way...when you put in a 2nd gen CP4 DPK you create a dedicated fuel path which sends dedicated fuel across the CP4 bearings and this fuel never goes directly to the injectors but instead always goes back to the tank carrying heat with it.
so definitely FORD...if CP4 fails are due to customer behavior...why has ford pinned the cp4 cups so they dont rotate and why is there a code change with the end goal of cooling off the cp4 bearings.
since 2020 there have been cp4 failures and those failures put into question how effective pinning the cups really was....until ford admitted to the stale fuel problem during the covid era which resulted in cup cups being jammed with diesel tar from stale fuel because the geniuses at ford didnt use any fuel storage additive's in the trucks fuel knowing the trucks were going to sit.
now when they finally got around to starting them...the CP4 timing gear slipped since the timing gears is a press fit and some slipped to the point that the CP4's later failed...others slipped only to the point of loosing optimal fuel pump timing...so they changed the code to match the mechanical mis aligned timing gears. publicly they are saying the code change is to make the cp4's run cooler...this is by changing the metering valve threshold so that more fuel goes to the cp4 and the more fuel would be mostly unused and would basically return back to the tank carrying heat.
and oh by the way...when you put in a 2nd gen CP4 DPK you create a dedicated fuel path which sends dedicated fuel across the CP4 bearings and this fuel never goes directly to the injectors but instead always goes back to the tank carrying heat with it.
so definitely FORD...if CP4 fails are due to customer behavior...why has ford pinned the cp4 cups so they dont rotate and why is there a code change with the end goal of cooling off the cp4 bearings.
Thank you
Lead Driver
Joined: Feb 2022
Posts: 7,955
Likes: 4,039
I stand by using good fuel and a good additive to protect the pump and a DPK to protect the HP side just in case the pump does fail. I wish I could buy lifetime insurance for $400 for the rest of the truck.
More Turbo
Joined: Oct 2023
Posts: 700
Likes: 478
Its just an inferior design. Out of the three powerstroke trucks ive had, two had a failed cp4 pump. I purchased all three trucks the same day and they were all filled from the same on road diesel tank I had at the shop. The two that failed were in F250 foreman/personal trucks that the operators chose to also use lube additives.
The one that didn't fail, and I still have in service with over 200k has never seen an additive and since 2021 gets filled up at whatever local fuel station with whatever quality diesel they have because I stopped filling my on site tank.
Supposedly the cp4 is also used in many other applications but as far as I know none of my 10+ pieces of diesel powered equipment has one. Never had trouble with premature hpfp failure on any other of my diesels and they all get used to very high hours/mileage with no additives or special treatment.
The one that didn't fail, and I still have in service with over 200k has never seen an additive and since 2021 gets filled up at whatever local fuel station with whatever quality diesel they have because I stopped filling my on site tank.
Supposedly the cp4 is also used in many other applications but as far as I know none of my 10+ pieces of diesel powered equipment has one. Never had trouble with premature hpfp failure on any other of my diesels and they all get used to very high hours/mileage with no additives or special treatment.
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Hotshot
Joined: Jul 2013
Posts: 14,244
Likes: 2,179
Its just an inferior design. Out of the three powerstroke trucks ive had, two had a failed cp4 pump. I purchased all three trucks the same day and they were all filled from the same on road diesel tank I had at the shop. The two that failed were in F250 foreman/personal trucks that the operators chose to also use lube additives.
The one that didn't fail, and I still have in service with over 200k has never seen an additive and since 2021 gets filled up at whatever local fuel station with whatever quality diesel they have because I stopped filling my on site tank.
Supposedly the cp4 is also used in many other applications but as far as I know none of my 10+ pieces of diesel powered equipment has one. Never had trouble with premature hpfp failure on any other of my diesels and they all get used to very high hours/mileage with no additives or special treatment.
The one that didn't fail, and I still have in service with over 200k has never seen an additive and since 2021 gets filled up at whatever local fuel station with whatever quality diesel they have because I stopped filling my on site tank.
Supposedly the cp4 is also used in many other applications but as far as I know none of my 10+ pieces of diesel powered equipment has one. Never had trouble with premature hpfp failure on any other of my diesels and they all get used to very high hours/mileage with no additives or special treatment.
Mountain Pass
Joined: Jul 2024
Posts: 136
Likes: 64
I would like to know which additives Break down the lube value of pump diesel,so I can stay away from those.Please let us know
Hotshot
Joined: Jul 2013
Posts: 14,244
Likes: 2,179
but yes...all diesel additives are not all lube additives
https://bobistheoilguy.com/forums/th...esults.125503/
Mountain Pass
Joined: Jul 2024
Posts: 136
Likes: 64
simple google search will get you lots of info....the discussion at the below link refers to a third part study...note the ones that indicate "worse than untreated diesel" or something to that effect.
but yes...all diesel additives are not all lube additives
https://bobistheoilguy.com/forums/th...esults.125503/
but yes...all diesel additives are not all lube additives
https://bobistheoilguy.com/forums/th...esults.125503/
Hotshot
Joined: Jul 2013
Posts: 14,244
Likes: 2,179
Laughing Gas
Joined: Apr 2003
Posts: 789
Likes: 231
More Turbo
Joined: Oct 2023
Posts: 700
Likes: 478
Opti-Lube bottles were what littered my shop shelves and floors of those two trucks when they were active in my fleet. Said extreme lubrication in big enough letters on it. I take it that was a lubricant enhancer. I never bought the stuff for the company, the two guys who wanted those trucks bought that stuff out of pocket.