1993 Mercedes Benz 320CE
Forgot to mention replaced it with a brand new ovp relayTested with known good oem OVP?
Mine is the m104 efi version alreadyAir, fuel, spark...
Sounds like fuel issues to me.
You might have bad plug wires or cap and rotor, distributor issues, as well.
2 of the coilpacks were replaced already. Brand new 3 high tension wires but the spark plugs i installed was NGK brandI don't see coils or spark plug cables. The ENTIRE ignition system (3 coils, 3 spark plug cables, and 6 spark plugs) are disposable with a very finite lifetime.
And the ONLY proper spark plug for that engine is Bosch F8DC4 and nothing else. Ditto on only using Bosch coils.