1988 300ce engine wont start help!

[kodoq39]

engine start and instantly shut off even i rev it high it wont stay on no more than 2 seconds and when i looked to speedometer the RPM didnt move just stay on 0. got checked my mechanic yesterday he said fuel distributor, and after i told him the RPM didnt move he said 90% ignition control module is the problem. so my question is which one is most likely the problem? thanks for any advice