| Symptom | Possible Sources | Action | 
| Excessive crankcase pressure | 
		
  | 
		CLEAN or INSTALL new PCV
		components as necessary.
 TEST the system for normal operation.  | 
	
| Engine. | Worn or damaged engine
		components.
 REFER to: Engine (303-00 Engine System - General Information, Diagnosis and Testing).  | 
	|
| Oil in the air intake system | Crankcase vent oil separator | CLEAN or INSTALL a new
		crankcase vent oil separator.
 TEST the system for normal operation.  | 
	
| Turbocharger. | Worn or damaged
		turbocharger.
 REFER to: Turbocharger (303- 04 Fuel Charging and Controls - Turbocharger - 2.5L Duratec (147kW/200PS) - VI5, Diagnosis and Testing).  | 
	|
| Excessive crankcase pressure | Worn or damaged engine
		components.
 REFER to: Engine (303-00 Engine System - General Information, Diagnosis and Testing).  |