Any Detroit diesel guys here?

they are both inline 6-71's and they seem very clean and don't seem to be slobbering like a St. Bernard after a 10 mile run on a hot day .
they probably just need a good tune up which consists of adjustments of the valves , injectors and the rack . If you are not familiar with these engines get someone who is . you need special tools and the rack and governor are not to be messed with because a runaway is very possible .

Thanks, Jimmy. I was going to do the easy, simple stuff first and go from there. I definitely won't be messing with the valves or anything, as I would like to maintain a status of non-liability, should something happen. Funny you guys mention how clean they are, as I stocked the bilge with rags and brake cleaner to clean them up a bit. It's nice to be able to work on something without the need of a tyvek suit! I thought them filthy, actually.