Join Date: Jun 2008
Location: Brampton, Ontario, Canada
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At THAT mileage, it wouldn't surprise me if the HPOP failed on a 2003 engine. Although the propensity for injector failures are greater on the 2003 model years, I would speculate that the dealer quoting all eight, did so to save you from having to pay the further labour to replace more injectors in the near future. I'm assuming by mechanical pump, you mean the frame mounted HFCM which I suspect wasn't putting out sufficient fuel pressure which likely caused your injector failure(s). For what it's worth, REGULAR oil changes are that much more important on these engines due to engine oil actually being used to operate the injectors. By regular I mean every 3,000 miles (5,000 kms.)with Ford/Motorcraft 10W30 oil.
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Ford Diesel/Senior/Master Tech who placed 2nd overall in Ontario on the Fix-It-Right-First-Visit score for 2010
....who works at a dealership that now employs SOME half decent looking female employees since they overhauled most of the administrative staff
....but STILL loves hot women with big boobies
....and STILL hates working on E-Series with 6.0L