Welcome! I'm kind of "on the outside looking in" on here as I haven't drunk any on the M-B Kool-Aide but they let me hang out anyhow (I have an '85 S-10 with a modified OM617 that I use exclusively for Land Speed Racing).

We can expect several members on here to howl in protest but the only way I've been able to get mine to run after losing prime on the fuel system is to carefully start it with starting fluid and then it pretty quickly gets its prime back and it runs fine until the next time I drain the fuel system. I can't say that I like doing it this way but it works. So there's one possible method, not recommended.

Dan