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Need 6.0L fuel injector/pump tech help
Let me apologize first off for two things - am completely new to this and am doing this for my boss so my lingo and tech. knowledge aren't very good! Here's the story on his 2006 350 S-Duty 4X4 6.0 diesel:
Have been having fuel injector problems for awhile now - use the truck extensively (over 140,000k miles) and get it serviced regularly. Replaced one injector in 07, replaced another about 2 months back. Was on a trip last week and had another one go bad - got it replaced by an authorized Ford dealership in Missouri. On the way back to Arizona from Missouri, completely lost power outside of Amarillo and took it to another dealership there. Was informed that 5 out of 8 injectors were now bad and ended up replacing all 7 remaining ones. Was also informed that the reason they went bad was a faulty fuel pump, which the dealership in Missouri should have caught, because of metal in the fuel.
The question I have is this: is checking the fuel pump part of standard procedure when a fuel injector goes bad? Is there anything in Ford service repair writing or guidelines that says that? Is it just one of those common sense things that tech's are supposed to know but sometimes forget?
I want to go to the dealership in Missouri and recoup some money for the repairs I had to do in Texas but need to have my ducks in a row before I go. If I would have known in Missouri about the fuel pump, I would have replaced it then, saving over $4000.00 dollars in repairs.
Thanks in advance for your help and again, please take it easy on me!!!!