It sounds to me that you have leaking injectors. The column of fuel between the distributor and injector must be maintained while shut down. If the injector leaks, that cylinder or cylinders doesn't get fuel or gets it in too lean proportions for a period.
Since CIS injectors are fairly cheap (not exactly sure what you have with that model), its probably cheaper to replace them than to pay for diagnosis to find the culprit.
Bosch Master, ASE Master, L1
33 years MB technician