If the fuel system on your 350 is like my 1987 300D it is "self Priming." No really, stop laughing.

1. Hook your battery up to a charger, you are going to needed it.
2. Remove the fuel filter and fill it with diesel. Then reinstall the filter.
3. Put the pedal to the floor and crank it.

It will cough, sputter, and maybe even run until the fuel filter is empty again. Remove and refill the filter. Repeat.

Each time you will be pulling the fuel further and further up from the tank. You will also be purging out the air. Eventually the car will stay running.

-Jim

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1995 S350D, Green with black leather interior.
Bought January 2008 w/ 233,xxx miles.
I did 22,000 miles during the first year of ownership.