I personally visited and inspected this 1993 300D.
https://norfolk.craigslist.org/cto/d/1993-mercedes-300d-turbo/6610129548.html
Problems, engine was knackered, specifically the throttle linkage, but even worse was the JB weld sealing injector #4 to the head.
I saw this one coming from how he was describing the car in a running state, I immediately knew I wasted my time.
Cylinder #5 was stone DEAD, the engine shook VIOLENTLY in the car, so much so I didn't even want to test drive it. The door handle and seat controls where completely destroyed. The wooden trim was decimated all over. Lots of random JUNK and trash filled every cavity of the vehicle except the drivers seat. You literally couldn't sit in the passenger seat, trunk was destroyed as well and filled with crap.
The body is also in poor shape.
The car was driven into the ground and received ZERO care, it's a parts car.
I like how he took my potential diagnosis of the engine and ran with it. I told him cylinder #5 could be dead because of low compression or if he was LUCKY, an injector, injector being an optimistic, hell naive diagnosis.
Before I left I showed him what an OK running OM603 should sound of behave, I opened the hood and started her up.
I told hijcould swap injectors to see if it's fuel or compression related, then told him to get a compression check and contact me again with results, he has yet to respond...
For $1,300? CHRIST!