From Citroen SM Wiki
|Oil pump shaft is slightly too short||Design||Oil Pump Driveshaft|
|Primary chain tensioner||Design||Primary Chain Tensioner|
|No oil to Primary Chain||Design||Primary Chain Oil Spray|
|York Compressor caused shocks on intermediate shaft||Design||Air Conditioning|
|Early oil pickups can crack, leading to air in system||Design||Oil Pickup Modification|
|Early fuel injectors||Design||Danger|
|Sodium-filled exhaust valves||Age-related||Danger|
|Fuel and Oil hoses||Age-related||Danger|
|Starter circuit overloads ignition switch||Design||Ignition Switch|
|Early Water Pump seal is flawed||Design||Water Pump|
Rumored (but not factual) Weaknesses
- primary timing gear press-fit on crankshaft
- - It was rumored that it could slip.
- - If it ever did, it was a one-engine thing. No change recommended.