Consider the fuel pump relay..that is a typical symptom...have had them just "quit" several times on different model 190's. Car wills top dead and not refire..had at least three go bad. I think if the CPS is gone you would have no spark as this controls the timing...or at least erratic firing. If the fuel pump relay is bad you will get no pump whine...try turning the ignition to the "on" position without engaging the starter..if no pump whine...likely the FPR. (I think that year had twin fuel pumps, so unlikely they both went south)