Longevity of the detuned 6.7 Powerstroke

drittal wrote:

4x4ord wrote:
Here is a Link to a page that describes some of the engine upgrades. The injection pump has been addressed. Somewhere I've read that the new pump has a longer stroke.

Unless Bosch found a way to keep the insides of the 4.2 pump inside it, all they have done is made it more resistant to wear. In the end, all HPFP will eventually fail. The question remains when. The difference is a CP3 keeps it's insides inside. You replace the pump and go on with life. A CP4 eventually disintegrates and pushes all that metal through the fuel system before you ever know there is a problem. End up replacing the entire fuel system.

My personal belief is that there was something wrong in the manufacturing process of the CP 4.2 pump. A handful of pumps (initially about 4%) were destined to premature failure. I believe Bosch corrected what ever it was that was allowing for those pumps to be built without disclosing the actual flaw so they wouldn't have to admit fault. If the pumps were all destined for failure the failure rate would be growing at an increasing rate as more pumps get out there with higher mileage. It seams to me the opposite is true....as time goes on I am hearing less of failing pumps. In fact, I have yet to run into a single person who has experienced a pump failure. I suppose, so long as the pumps normally last over 500,000 miles someone who plans on putting a million miles on their truck could have a new pump installed at the 500,000 mile mark as preventative maintenance.