Ford injector pump failure

dodge guy wrote:
These are the reasons a really smart diesel tech will not own a newer diesel. I used to be a Dodge (Cummins) tech. those engines didn`t have any issues. the other 2, D max and Powerstroke had their issues pop up in the early 2000`s. Cummins had minimal issues in early 2010, but nothing compared to the other 2. which is why the Cummins is such a smart buy!

OP, hope you can get it fixed reasonably. good luck! I would make a few calls into Ford and see what they will do for you!

They wave as they pass me by. Then I do the same further down the road. That's just crazy.

N-Trouble wrote:
There are still reports of CP4.2 failure on new 2015 Dmax trucks. Nothing has been "fixed"

So is Duramax running the "improved" CP 4.2 pump used in the 2015 and newer Ford 6.7L Powerstroke?????????????

Or is it the 2011/2012 and to 2014 version of the CP 4.2???

Ford advertised there were changes to the CP4.2 pump for their 2015's. Anyone know specifically what was changed??????????

2,000 BAR (around 29,000 PSI) requires some very expensive stuff...that is the
output diesel pressure from the CP4

the way the CP4 pump crank/cam and cam follower is pure dumb @$$ design and
made worse by the band-aide DLC (diamond like carbon) coating...which will NOT
allow the lube (diesel) to coat (wet or film) the cam/DLC surface...as diamond
is the best non-stick material known to mankind

Got worse when found that Bosch did NOT capture the piston to the
cam follower (think of your piston with no bottom cap for the rod)
It hammers itself into dust particles

The particles (now in combo with diamond dust) will be forced through the
filters to ruin everything diesel touches....and....since a return line...it will
back feed the pump again and again during the initial failure until it grenades

Thanks 45Ricochet...found another forum fed by this portal and here is where
I really into this and learned a ton on this CP4 issue. Wish I could
find the first one though


Ford's answers to the NHTSA 6.7 Investigation pg1 of 120 Posted: 03/01/12 06:53am

FishOnOne wrote:

dodge guy wrote:
These are the reasons a really smart diesel tech will not own a newer diesel. I used to be a Dodge (Cummins) tech. those engines didn`t have any issues. the other 2, D max and Powerstroke had their issues pop up in the early 2000`s. Cummins had minimal issues in early 2010, but nothing compared to the other 2. which is why the Cummins is such a smart buy!

OP, hope you can get it fixed reasonably. good luck! I would make a few calls into Ford and see what they will do for you!

cummins had serious issues from 07.5... DPF, EGR, turbo soot clogging problems. Many deleted their trucks to eliminate the emissions plagued design in turn to loose their warranty. Yep smart buy alright.

BTW... Cummins 5.0 in the new Nissan uses a CP4.2

Well that didn`t take long Fishy! I only seen a handful of that issue. no where near what the other 2 had! like I said minimal issues! I`ll take a soot problem over a $10k plus dollar repair any day! and the soot problem could be eliminated by not putting around in an empty truck to and from the grocery store!

Some newer DMAX owners are doing CP3 conversions as insurance. They tend to be more reliable, can handle higher HP before draining rails, and don't grenade when they fail. CP3 failures typically only involve a pump replacement.

If sticking with a CP4 plan on running a lift pump and fuel additive for lubrication.

Do you wonder if Ford dealers see this type of failure as a Cash Cow.

#1. Find a good independent diesel shop in the area and get a quote.

I personally find it ridiculous that the entire fuel system needs to be replaced. Yes, bypass fuel is returned to the tank then recirculated through the system.
Yes replace the injectors
Yes replace both the high and low pressure fuel pumps
Clean everything very well Tank, all fuel lines, filter housings. Really clean every thing from the Filter to the injectors VERY WELL! Then the filters keep all beyond them clean, yes you may loose a low pressure pump, but that should be a very good fix.

One or two cases of brake Clean should flush all the bad stuff.

Sorry for your bad fortune. Hope you find a way to get out of this with lower repair costs. I really can't imagine paying that much to repair any vehicle.

dodge guy wrote:
These are the reasons a really smart diesel tech will not own a newer diesel. I used to be a Dodge (Cummins) tech. those engines didn`t have any issues. the other 2, D max and Powerstroke had their issues pop up in the early 2000`s. Cummins had minimal issues in early 2010, but nothing compared to the other 2. which is why the Cummins is such a smart buy!

OP, hope you can get it fixed reasonably. good luck! I would make a few calls into Ford and see what they will do for you!

cummins had serious issues from 07.5... DPF, EGR, turbo soot clogging problems. Many deleted their trucks to eliminate the emissions plagued design in turn to loose their warranty. Yep smart buy alright.

BTW... Cummins 5.0 in the new Nissan uses a CP4.2

These are the reasons a really smart diesel tech will not own a newer diesel. I used to be a Dodge (Cummins) tech. those engines didn`t have any issues. the other 2, D max and Powerstroke had their issues pop up in the early 2000`s. Cummins had minimal issues in early 2010, but nothing compared to the other 2. which is why the Cummins is such a smart buy!

OP, hope you can get it fixed reasonably. good luck! I would make a few calls into Ford and see what they will do for you!

BenK wrote:
To bad the old threads are no longer available...anyone save this one:

Title: "Ford's answers to the NHTSA 6.7 Investigation" ?

About 120 pages. There was one before that one with about 54 pages

They are available, just need to save them on another device than the RV.net server
Example