I would drain all fuel out and pull the fuel tank to shake out all crap and sediment which might be there. If no sediment fine, if some it will blind over the tank screen and result in loss of power. Of course new primary and secondary filters. Great thread on removal, maybe 1-1/2 hours out and back in.
Good Luck with the find !!!!

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Gary
Experience is something you get, Just after you needed it....
'99 E300 295K, '83 300D 220K, '75 240D 185K sold
'80 MCI Bus Conv DD 6V92TA, w/4 cyl. Kubota diesel GenSet 12.5KW