I wouldn't be too worried. See if you can offer them $1900 or something, get the thing tuned up and put on some good brakes and you'll be all set! Diesels are supposed to start rough.. haha!
-2005 John Deere 4310 with bucket loader, 5' mowing deck, 5' backblade, 5' boxscraper, and 6' landscape rake
-2003 Dodge Ram 2500 SLT Crew Cab 4X4 5.7L
-1995 Ford F350 XLT Regular Cab 4X4 7.3L PSD with Diamond 8.5' Plow