Before spending any money on a tired or ailing diesel engine - check the compression first
If your diesel is showing signs of terminal ill health (hard starting in cold weather, excessive blow-bye / oil consumption, lack of power, round idling, etc.) it could be the engine has low compression. To repair this diesel engine problem usually requires a complete and expensive engine overhaul. Before spending any money on a diesel with these symptoms - ALWAYS do a compression test first.
Problem & Solution
Common among these chassis:
W110 W111 W112 Sedan
W115
W116
W123
W124
W126
W201
We provide the instructions and tools you will need to determine the real health of your diesel engine. If the engine has good compression then you can be assured your hard starting and power problems can usually be solved on your 190D 200D 220D 240D 300D 300CD 300TD 300SD 300SDL 350SD and 350SDL.