The Mad Norsky provided a lot of accurate information regarding the Bosch CP 4.xx HPFP debacles...
I started a long lived and much read thread here at RVnet regarding my experience with he CP4.2 fuel pump and Ford's shameful treatment of loyal customers.If anyone is interested, just search for Ford 6.7 shameful event...the facts provided by me are true, regardless of the shameless schilling by the "Blue Koolaid Crowd...
I would like to refute a supposed fact regarding the "fuel flow valve" and rust...the rust does not have to be in the fuel stream components to have Ford shamelessly refuse warranty...they will reject even if the mounting boss that is not in the fuel stream and never sees fuel has any discoloration on it...
GM uses the same pump, had similar failure rates but they warranty their failures. In fact, of all the manufacturers that use the CP4.xx warranty the failures no questions asked...except for one...Ford...just the facts
Regards