More than likely the rod(s) are bent. I have seen many. A brand new engine from Mercedes complete is $10,000 installed and has a 50,000mile warranty.

------------------
Benzmac:
1981 280GE SWB
1987 16V
ASE CERTIFIED MASTER AUTO TECHNICIAN
SERVICE MANAGER FOR 14 BAY FACILITY
MERCEDES SPECIALIST 8 YRS
PARTNER IN MERCEDESSHOP.COM