Engine supports
There were the wrong type of engine supports fitted to early diesel XMs, supposedly up to Q1 of 1992). The replacement top ones are softer and taller, and have a different shape. In fact, the original ones made the engine sit at an angle (the gearbox end was higher by about 1/3 of an inch). Post-1993 microfiches show this replacement, pre-1993 ones do not. If you buy replacements, check that the salesman is checking the right microfiche or you may get the wrong supports: those for a 2.0 liter gasoline engine. The new supports made such a difference I though I had a different car!
The bottom supports of early engines may have been pressed in at a wrong angle. Citroën will try to sell you the whole aluminium support, not just the press-in rings vulcanised together with rubber. Try Peugeot instead: the same engine support parts appear in the 405 and 605.
Željko NASTASIĆ