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
ricatic wrote:1jeep wrote:
Wow 26 pages and still going...who is running this thread the enegizer bunny?
Civil discussion supported by known facts driving honest guy's who want to know why Ford has taken the low road when it comes to customer service regarding Bosch CP4 series HPFP's.
There has been a goodly amount of excellent information discussed on this thread...despite occasional attempts by some to get the thread closed.
According to answers provided to the NHTSA by Ford and GM, percentage wise, Bosch CP4 series HPFP's are failing at very similar rates. It is not about filtration. It is about lubricity...or a breakdown of the hardening coatings on the internal parts. Two Detroit Diesel engineers have inspected the HFPP from my truck. No water, no sign of particle contaminants...just an under lubricated and overheated pump assembly.
Regards
There could be many things internal to a pump which causes it to fail. Especially at the extreme pressures and incredibly tight fits/tolerances these pumps are designed at. Lubrication can just be making a bad design better. For example, there may be some mechanical interference issues going on, and lubrication helps pumps which are on the edge. Even with Canadian diesel, there are still pump failures. Until Bosch figures it out, there probably won't be a fix.
I am sure GM, VW, and Ford are raising h_ll at Bosch.
Somebody said it was a 0.6% failure rate. That means most of the pumps are working fine...99.4% of us should be fine! I hope it is this way!
