Ok, I have been reading all the forum issues regarding the Diesel engine and idle issues, but I could not resolve my issue.

I bought a 1974 W115 240D that hasn't run in the last 10 years.
I brought it home, started it and went around the block, with no power brake or acceleration. there is some pinging noise.

so I cleaned the injectors, put them together, changed some fuel lines and started the car... after 10-15 seconds it dies... I checked the linkage lengths and reset as per manual, and may be I stuffed it up. what ever I do, it starts first go, and idles very high for few seconds and then dies...

I bled the air, cracked the hard lines and removed air, etc...

can anyone point me in the right direction?

thanks a ton! this is my first Mercedes and I want it to be cool...