Get a second opinion on the injectors. It would be very rare to have problems with all 8 unless the engine they came out of never had the oil changed or had some sort of failure that filled the injector oil with metal. Doubtful, and also rare the the electrical portions would all go bad as well. My ol 7.3 Powerstroke has right at 300,000 miles on it with original injectors and turbo. I abuse it, I use it, it still has good power, starts easy when cold, but a little smokey from the worn injectors. I change the oil every 10,000 miles, it runs very smooth for the lack of maintenance it gets. Only problem I ever had with it was hard warm starts due to blown orings on the IPR valve. The IPR valve can cause running issues hot or cold if the solenoid on it is getting bad or doesn't make good contact with the IPR valve itself. The harness and plug ins at and under the valve cover are problem areas (burnt pins at external plug end, bad connection at injector itself, broken wire under the valve cover. A shop with a good scan tool should be able to plug in and you can basically watch the engine run by the many different values given.
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Today's Featured Article - A Lifetime of Farm Machinery - by Joe Michaels. I am a mechanical engineer by profession, specializing in powerplant work. I worked as a machinist and engine erector, with time spent overseas. I have always had a love for machinery, and an appreciation for farming and farm machinery. I was born and raised in Brooklyn, New York. Not a place one would associate with farms or farm machinery. I credit my parents for instilling a lot of good values, a respect for learning, a knowledge of various skills and a little knowledge of farming in me, amo
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