hangit06

My 2006 E320 CDI has been stumbling at low RPMs after restart with engine at operating temp. It is not constant, symptoms similar to what I would describe as a vapor lock on a gas engine or perhaps water in the fuel . DAS interrogation shows all normal values for compression and injector values, normal quantity and pressure control valve tests. No signs of injector seal leaks. No codes are present. Seafoam run through tank.

Just replaced the fuel filter, symptoms still there.

Thoughts?

John

hangit06

Still having the issue. Konigstiger sent me a DTB describing the possible fix, new EGR and ECU flash. Yesterday I took the vehicle to the local MB dealer, DAS scan, no codes, and no symptoms, of course. No charge! Since the surging occurs in warmer ambient temps, yesterday was 40F, I am to bring it back in the spring. Anyone have any other ideas?

John