Im quite familiar with the need for stating facts.. in fact I am paid to inspect potential MB purchases for individuals of wich all are running strong to date.. this is my second mercedes the first being an '82 300 sdl that I sold at a profit with 245k mi so I am familiar with the cost of repair and components..I have not tested the vaccuum leak scenario only because I can hear no hisses or see any bubbles of fluid and the door locks all seem to work.. the hose seem to be decently flexible for a 13 y/o car...also I have not tested the autoleveling system for leaks the spark issue has been solved.. the bolts connecting were tightend.. the fuel distributor works great.. I bought it used from my trusted parts guy for years..the tech states that it does not leak a drop..no fuel leaks of any type.. the next step is to take to my guy in Tulsa here.. for a complete DX on his pc to eliminate any more guess work.. This was my intention from the begining but the "gentleman" I purchased the car from wanted to try to fix it locally first..I was thinking of getting rid of the car only because I dont have time to follow up with techs and keep a journal..the diesel was never this much trouble.. the money was never an issue.. and I apologize if it seemed I was trying to get advice with out giving in return. Ill keep you all updated on the results..
D