motor wants to start, but it wont kick over. it seems like it goes on but don't. on 2004 Ford F-250 Super Duty

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new batteries, even plugged into a computer and only red low voltage. still wont start.
(1) Answer
could be injectors, high pressure oil pump or fuel pump. you need a good truck shop experienced with this motor. this motor is a nightmare for many,many problems and without an experienced tech working on it, you could spend a ton of money on guesses.