Truck won't start

its not spinning any faster with jumper connected direct to starter

 

What was the story that lead you to going with a rebuild? What tests were done? I would seriously consider a compression test before dropping any more cash.

Think back to basics - the fire triangle. Air, fuel, heat. If you've got good air flow in/out of the cylinder, good compression (compression is your heat) and fuel, it HAS to do something. At this point (and in my own, personal opinion) not nearly enough has been checked/verified to make me lean towards a rebuild yet.

 

Has anyone suggested pulling the air cleaner out and tryin to start it? I've seen air cleaners prevent things from starting

 

Myself at this point I'd almost pull the inlet pipe from the filter right off the turbo to eliminate all the air intake piping. Maybe even pull the exhaust pipe off the turbo and see if its a plugged up exhaust.

 

Yeah you can spray all the ether in there you want, but if it's not getting into the cylinders it's of no use

 

Or if you can't get it out either.

 

Replace the starter

 

Don’t forget a new starter, that’s another $3-400

 

I'm not able to watch any of OP's videos but I've seen ether light off engines from the 40's running 6:1 compression and spinning over at literally 2 RPM. A slightly slow crank should still make enough heat to auto-ignite ether.