6.7L Ford Powerstroke CP4 Injection Pump Failure #2 Disassembled
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- Опубліковано 16 лип 2018
- This is the second of two back-to-back failures we recently saw on the 2011-2017 6.7L Ford Powerstroke Bosch CP4.2 high pressure injection pump. Inspection of the fuel system and analysis did not indicate water in the fuel since both the Fuel Press Control Valve (FPCV) and Fuel Volume Control Valve (FVCV) had zero evidence of rust. However, this still appears to be caused by lack of lubrication because of the nature of the destruction of the cam and rollers located within the pump crankcase. Due to a design flaw, the debris from these parts was sent to the high pressure side of the pump, subsequently pressurized, and sent out the the fuel rails, all eight injectors, the return lines, the fuel cooler and back to the tank before it was eventually drawn back through the primary filter within the Diesel Fuel Conditioning Module (DFCM) and the engine mounted secondary filter. The end result was complete destruction of the high pressure fuel system resulting in a repair bill nearing $9,000!
The Scorpion CP4 Disaster Prevention Kit would have prevented the contamination of the fuel rails and injectors by diverting the debris from the failing cam and rollers directly back to the tank, instead of to the inlet to the high pressure pump, thereby saving everything downstream of the injection pump and a whole lot of $$$. Look for our other video containing this innovative and relatively cheap insurance for your 6.7L Powerstroke.
It is our further belief a FASS fuel/water seperator would greatly prolong the life of the stock CP4 pump by continually filtering out water, dirt and air from the fuel, thereby delivering the highest quality fuel for this application. Also look for our video containing this relatively cheap upgrade for your 6.7L Powerstroke's fuel system that will help your investment last longer with less downtime and expense.
Thanks for watching!
Ozark Diesel Off Road - Авто та транспорт
Always, Always use a fuel additive that contains a lubricate additive!!!
Thanks for training, I need your opinion regarding a situation with this kind of pump on a new vehicle. I have noticed on the inlet part of the pump that there are some spots, drops and can not tell whether is is leakage of fuel or vasseline leaking from that inlet. The huse is ok, there is no leakeage only at the base of that metalic inlet. The service dealership could not tell either, told me to wait.
Marius G, if it was on the inlet on the driver side of the pump, it could be a coolant leak from the line that connects to the top of the turbo. It will be a reddish or whitish substance as the coolant dries.
OZARK DIESEL OFF ROAD
It is on the diesel pump, there are 2 rubber huses, one comong from diesel filter. On that inlet there are some yellow drops. I could send some photos if you provide mean email addrrss.
What caused this pump to fail ? What’s the best preventative? I have seen a “disaster prevent kit” what’s your feeling on them ? That’s low miles for that to happen isn’t it ?
There was no sign of contamination from water(rust) nor DEF so I'd say small amounts of emulsified water and low lubricity fuel, perhaps even more than 20% biodiesel. I recommend a lubricity and water additive with every fueling, as well as draining the water separator monthly. On the disaster prevention kit, particularly the one manufactured by S&S Diesel, I think they are relatively cheap insurance against total high pressure fuel system contamination from a failed pump. I've seen some argue that it does not protect against the most common pump failure which is the elements, but both of these pumps failed in the cam/roller, and the kit would most likely have prevented total fuel system failure by sending the debris back to the tank instead of the rails, sensors, injectors, etc. I also like to install a FASS fuel system due to the fact they have two filters, one of which is a dedicated water separator, as well as they continually cycle the fuel to "polish" it. And yes, that was a well maintained low mileage occurrence.
@@ozarkdieseloffroad567 All I can say is the element's spring tensions and they are weak! Telling you this from the past experiences and its mistake of Bosch!
Do you know how to get the intake screen out of the pump body? Any help would be greatly appreciated, thanks in advance
Are you referring to the tiny screen under the MPROP? The CP4 is not field serviceable but a small pick should work to remove it.
@@ozarkdieseloffroad567
It's the one in the fuel feed line after the filters, to screen fuel just before it enters the pump body.
I'm working on a reliable replacement for the CP4 pump, starting with the Ford style, I'm trying to get the measurements of that port, but that screen just doesn't want to come out.
I've pretty well mangled it but it refuses to let go.
Thanks for the reply
Darrin
Add some two stroke oil to your diesel and hope this solves the problem
Ok, I got a 6.7l in the shop with a pump leaking from the left pump head. It was staying in a continual loop of pulling in air and pushing out diesel. Got the heads off and saw just bad orings so I got a seal kit for it. The rollers and cam are spotless, but what I'm wondering is how you pulled that front cover. Did you slide hammer the pump shaft and pull the cover that way?
If I remember correctly, I put the nut on the shaft and clamped down it in the vise. Then I took a deadblow hammer and gently tapped on the pump housing as I rotated it. I think your idea would work as well, since it's just basically the reverse of my method.
@@ozarkdieseloffroad567 ok cool. I ended up using a slide hammer clamped onto the shaft nut and one pop pulled it out.
@@funwithmagnus8570 Awesome, faster than what I did!
Shows how SORRY FORD IS for building junk like this and costing so much to fix, i own one and had this problem, im going to trade it off and go Dodge or Chevy, i will never own another ford as long as i live, JUNK!!!!!
Just watch what year of Chevy or Dodge you get as some of them also have the CP4 pump, and the same problem.
All the newer diesel trucks run the same pump and they are all having the problem. Not a truck manufacturer problem. It’s a Bosch cp4 problem.
The gm l5p duramax does not use the cp4 the new dodge has gone back to cp3 the ford still using it last I checked.