ricatic wrote:
I'd like to know where the rust was on the part(s)...Was the area in question in the fuel stream or a mating surface on the pump?...and the Blue Koolaid crowd can support the crooked Blue Oval but they can not avoid the following truth...
There are several manufacturers using the Bosch CP4.xx series HPFP...Ford, GM, Mercedes, Porshe and VW to name a few...all but one manufacturer fixes these POS pump failures, no questions asked,under warranty...only the BLUE Oval has decided to"not repair under warranty" their HPFP failures...this is not hate...it's just the facts...
Regards
Actually, this is not quite true... unscrupolous VW dealerships have tried to screw female TDI owners over with full tab repairs to 9 or $10,000, but an Online complaint form filled out by the gals, and advising the service manager that a complaint has been filed with NHTSA, and that they should be hearing from VW corporate shortly usually dashes their full tab charged expectations.
When you own a Bosch HPFP powered diesel, you need to be smarter and more knowledgeable about them than the service manager you're dealing with, and the technician trying to pull a fast one.
VW likes to use the term "Your fuel is contaminated". This likely puts the onus on you, the owner, for doing something wrong. That's also quite incorrect.
That's speak for " our cheap Bosch aluminum bored CP4.x series pump with a steel piston just grenaded and it contaminated your whole fuel system."
They will find metal in the fuel pressure sensor chamber, metal shards and filings, that fill up a sieve, block fuel passage, and causes your whole fuel system to blow a P0087 "low fuel pressure in fuel system" code.
Ask the mechanic, when the metal shows up, where it all came from, when there's a 2 or 4 micron fuel filter just upstream of the HPFP that would filter all that cr*p out. The pump ate it self up, turned into a machine shop and all the metal filings, aluminum, clogged things up. hence the low fuel rail pressure.
Ask them to pull a fuel sample, test it by a lab, and prove the contamination... also, always, always, always save your diesel fuel receipts... if it comes back that the fuel is bad, the station your last purchase was from is going to be having a hell of a lot of repair bills, if indeed, their fuel was contaminated.
