Low fuel VOLUME can cause that type of issue.

With the engine running ON the return side, there must be 1 liter in 25-30 seconds.

Also a bad dist cap, rotor OR coil can cause the same symptoms

__________________
MERCEDES Benz Master Guild Technician (6 TIMES)
ASE Master Technician
Mercedes Benz Star Technician (2 times)
44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)
Retired Moderator