FWIW changing the starter requires disconnecting the main lead and a small wire on top. You can not see that nut. I gave up feeling for it and removed all mounting bolts which left me holding the starter while removing the nut. That wire is too short to allow resting the starter on something...
Problem solved. I thought the engine was going to jump out and run down the street. Started in < 2 seconds.
And I've been dealing with this for over twenty years. No more holding my breath.
The patient is a 2001 7.3L with about 155k miles.
Since purchased in 04 it has always cranked slowly. It will not start < 40° without help from the block heater. I've changed to synthetic to help but even on a 80° it turns over like 20° outside. Very slow cranking that speeds up after 4-5...
Greetings. Old(er) truck and old driver here. 2001 F350, crew, 8' bed dually. Various mods. Affectionately known as the Beast. It once pulled a toy hauler named Beauty. Yeah, I know.