Don't know if it makes a difference but I checked the engie codes and there is a P0455 code.


Looking it up it says even with this code the engine would run normal without issue.


I was thinking to replace the fuel pump and or the fuel filter due to her E320 idles rough and seems to choke at stops and take offs.


Is there a first thing to break on a 2003 E320 EVAC leak?