I hope this works ...
https://www.youtube.com/watch?v=lEqwMvdwVog

I'm looking at this 1985 Suburban with a 6.2 diesel.
Does this sound OK to those of you with experienced ears?

The engine is not original but is said to be a Cummins 6.2 harvested from a Humvee (seller said that's 2nd hand info he can't document).

Sure appreciate any help.

Thanks - David