Ford's answers to the NHTSA 6.7 Investigation
There was a request for a link to Ford's answer's to the NHTSA investigation posted on a previous thread, since closed. Here is the link: Ford's NHTSA Answers to the 6.7 investigation This PDF i...
Forum Discussion
Failure... VWs... reported here:
VW HPFP Pump Failures
Interesting, assuming some non-report bias, the rate is still in the range of .1% to 4%.
Calculation here:
Range
Now that leads us to a discussion of what is an acceptable failure rate?
Annual failure rates (all units in operation)
Below 10% sure
Below 5% sure
Given how catastrophic it is, I'd say, well below .1% for every year of operation, arithmetically added.
That still means in 10 years of ownership, every unit have a 1% change of failure.
Note that if a failure were to occur, the "savings" from operating a diesel is wiped out.
Given the unknown contribution of contaminated diesel and biofuels to the problem, I'd say buying a late model, CP4 HPFP / EPA 2010 diesel is now risky business unless it is given away for free.
The elephant in the room:
What is the failure rate of equivalent Heavy Duty / Medium Duty EPA 2010 diesel HPFP pumps?
Is this peculiar to the Bosch system or is everyone having problems with high pressure diesel injection?
VW HPFP Pump Failures
Interesting, assuming some non-report bias, the rate is still in the range of .1% to 4%.
Calculation here:
Range
Now that leads us to a discussion of what is an acceptable failure rate?
Annual failure rates (all units in operation)
Below 10% sure
Below 5% sure
Given how catastrophic it is, I'd say, well below .1% for every year of operation, arithmetically added.
That still means in 10 years of ownership, every unit have a 1% change of failure.
Note that if a failure were to occur, the "savings" from operating a diesel is wiped out.
Given the unknown contribution of contaminated diesel and biofuels to the problem, I'd say buying a late model, CP4 HPFP / EPA 2010 diesel is now risky business unless it is given away for free.
The elephant in the room:
What is the failure rate of equivalent Heavy Duty / Medium Duty EPA 2010 diesel HPFP pumps?
Is this peculiar to the Bosch system or is everyone having problems with high pressure diesel injection?
