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...
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ricatic wrote:
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 is over 20 pages long. There are some interesting statements contained in the documents. My favorite is the one where Ford says they buy the pump from Bosch as a "black box" and do no testing of the component. It is closely followed by the tantamount admission that the pump will not provide a long service life when exposed to the poor lubricity fuel found in the US. You will have to do the math using the sales versus failure tables for the US and Canadian trucks. Eye opening difference to say the least...
Regards
Ford has clearly misrepresented the pump rpm speed to the crank rpm speed in their document... that HPFP needs to have 2 full rotations to create 4 fuel injection pulsed timed very closely to the injector going off, per crank revolution.
They have stated in their document that it is a 1:1 ratio. That is patently false, the HPFP spins at twice the crankcase speed.
