In my opinion you have to start somewhere. I would want to see what the overall compression profile looks like first.


There are at least several possibilities. At this time you have no certainty of what is wrong.

im just trying to weigh my options. I do not particularly need this engine. My plans are to build an om606 with the om603 pump. So basically I just need the injection pump and since i bought it, I have discovered its a #22 head. My though is strip it down, remove the head, and have it pressure tested. If it checks out good then sell the head and anything else I can off of it. Then I am left with a core injection pump that I can send out to be built into a superpump.

Thats the only reason I feel its a waste of time and effort to try to get this running especially considering it seems as if it has a serious problem. (stuck rings, dead cylinder)

If you want to try and salvage it, you could try a piston soak for a few days, turn over and soak again. You could use Seafoam or even Wd-40 - just pour a tablespoon or two right into the cylinder through the injector hole (ideally on a hot engine). My 603 was getting same thing w/ stuck rings and also black oily junk collecting on intake valves from the now disabled egr.

W124 3.0 turbo diesel masses of white smoke | Mercedes-Benz Owners' Forums

https://youtu.be/BR59hRBBAAY