Hello folks,
I am new to this forum and also a new 1987 300D owner. I just acquired this 300D in Nov. 2011. So far I did:
1. injector purge (thanks for the info from this forum)
2. replaced all brake pads (easy stuff)
3. adjusted the transmission modulator due to shifting harsh, later found out one of the vacuum nipple broke off at the bottom of the transmission transducer, aka BFS, so I just tape it of. I am still trying to find out more info on how to totally disable the BFS.
4. changed the oil and filter
5. changed the transmission fluid and filter.

New problem:
#4 hard line is leaking at the injector end. I came home on a trip and detected excessive diesel smell. I opened the engine compartment and found fuel leak on top of the #4 injector. I put wrench on it, but it was tight. I took the line off and cleaned the end with scott-brite, that did not help either. I can see diesel shooting out at the top of nut and not at the return lines.
Questions:
1. Is this a common problem with the hard line leaking? I noticed my #6 is also new (from the last owner)
2. can the injector cause the leak instead of the line?
3. Where can I order a new hard line, or can I manufacture one myself?
4. is diesel suppose to run real loud? I am new to this so I cannot compare, my friends told me it is louder than normal, but what is normal for 1987 model year?

Thanks for your comments and input.