Interestingly enough the problem is gone, for now. I didnt do anything though.
The sparkplugs are only 2 months old, sparkplug wires distributer cap and fuel filter are all about 10 months old. Sounds like this could be an intermittent fuel pump problem maybe, or fuel pressure regulator as Joseph_H mentioned.
I will have to get under there and check it out. Maybe the wires are corroded and sometimes arent carrying the current they should be to the fuel pump? How can I diagnose the fuel pump?
Thanks for all the replies!!
1988 190e 2.3 with 91 engine