Blown EGR cooler on a Mercedes MBE 4000 engine?

[ichudov]

OK, this is a great idea. Thanks a lot.

1) Look at, test and fix EGR cooler if it is indeed blown.
2) Clean up all soot in the exhaust recirculation system.
3) Evaluate and replace several sensors as necessary
4) After the repairs are done, test head gasket by pressurizing the coolant system.

Thanks again.