I have a 300sel 1988 3.0L straight 6 which i am currently having starting problems with.

Sometimes it will start when it is cold but wont idle by its self, and runs rough when is running. Once been started that day it will not start again.

Note: it seems to me that there is not much fuel coming out of the injector pipes?????

Have replaced fuel filter, rotor arm and leads but have had no joy.

Help with this woulr be great!!! thanks

 

try taking a look at the fuel pumps. They might not be working properly and not getting enough fuel to the engine.