Starter on 94 sidekick strange cranking sound

[zukitrek]

Good day to you sir. Well i insisted and insisted, I cleaned all grounds and car fired up with old starter. I respect your knowledge so it must have been something I was checking/testing wrong that misled you. Well after a long time fiddling with idle (was way too high for me) and car really warmed up, timing spot on, I revved the car to 5k rpm and when left off gas pedal, the needle dropped all the way until it shut itself off. Now is the weird cranking and it won't turn on. It was not overheated also as Ive heard that overheated cars sometimes won't turn after they cool down. Is this fuel related/carb or what else could it be?

Thanks for all your time.

Javier