600SEL (140.057) V12-6.0L (120.980) (1993)
Positive Crankcase Ventilation: Testing and Inspection
PCV System
1.
Check all hoses/lines for general condition, restriction and routing. If a hose/line is oil saturated, cracked, hard from heat, restricted or mis-routed,
repair/replace or rerout as needed.
2.
Blow through hoses/lines. Be sure all passages are open. Repair/replace any blocked passage.