From my limited experience many times there are simple things typically wrong that further reduce power in 240ds.


The linkage from the pedal to the injection pump is not providing full movement. This is too typical not to examine.


The fuel system is not providing the right pressure in the base of the injection pump is another. Both are pretty easy to check and rectify if needed. Also since many of these cars sat around a lot. Make sure all the brake calipers are free and not dragging.


I have stated before that the 240ds do not have an abundance of power to start with. So you have to verify that what power is possible is still available.


You have a few other aging things to consider as well. For example are the shift points in the transmission coming on too early? Is the engine worn down with time and use too much? Anyways the average 0-60 acceleration time is known for your car in the archives. How does yours do in comparison?

It is a pretty safe bet that if I purchased six of them. Three would not do the average time until I repaired a few reasonably simple things.