Pretty sure im gonna have to pull it and rebuild. I kind of figured i would when i bought the boat, but i guess i just hoped it would be easier. Any help or guidance on where to get rebuild kits
1) If you don't know how it's supposed to operate, then why would you even think about rebuilding it yourself? Before you rebuild, in my opinion, you should know how it works and have manuals with the various clearance specs, etc. as well at the parts for the engine.
2) Get the manuals and books that have been suggested. But to save a lot of agony, why don't you get an experienced diesel mechanic to take a look at it? It might be money well spent and you'll learn a lot from talking with him.