M271 evo low fuel pressure

[Timos]

Hello guys i have a c class coupe c180 2011 m271 evo petrol

The car in hard acceleration miss fires in regular driving drives fine it has 190km chain changed in 140km

Parts I changed for the issue:

New low pump

New high pressure pump

New fuel filter and fuel level indicator in the tank



Next thing the mechanic will check in the fuel injectors

Any thoughts on how to sovle this problem?

 

[Uncle Benz]

Misfires on one cylinder or all of them? Partially blocked catalyst?