Concern 
 | Action 
 | 
External oil leak 
 | Inspect for any of the following conditions: 
|     •  | Plugged positive crankcase ventilation (PCV) |  
  
|     •  | Plugged or kinked PCV hose(s) |  
  
|     •  | Damaged or incorrectly installed PCV or hose(s) |  
  
|     •  | Excessive crankcase pressure |  
  
 | 
Rough Idle 
 | Inspect for any of the following conditions: 
|     •  | Plugged or kinked PCV hose(s) |  
  
|     •  | Leaking (damaged) PCV or hose(s) |  
  
 | 
Stalling or slow idle speed 
 | Inspect for any of the following conditions: 
|     •  | Plugged or kinked PCV hose(s) |  
  
|     •  | Leaking (damaged) PCV or hose(s) |  
  
 | 
High idle speed 
 | Inspect for a leaking (damaged) PCV or hose(s) 
 | 
Sludge in the engine 
 | Inspect for any of the following conditions: 
|     •  | Plugged or kinked PCV hose(s) |  
  
 |