Had a f450 body off a couple weeks ago and tech line wanted me to remove rear fuel plugs and enrgize and deenergize injectors and it was not possible that I could see. Turned out to be h-p fuel pump scored and at wot pressure dropped from 26,000 psi to 1,800 psi. I am so thick into diesels I tatooed psd to my arm with Taz on it. Just started to naccess site looks good.