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Diagnosis and Testing|Removal and Installation > < Engine Emission Control

Focus RS 2003 (09.2002-)

Engine Emission Control - 2.0L Duratec-RS (Zetec) - Engine Emission Control Focus RS 2003 (09/2002-)
Diagnosis and Testing

Inspection and Verification

  1. Verify the customer concern by operating the system.
  1. Visually inspect for obvious signs of mechanical damage.

Visual Inspection Chart

Mechanical
  • Vacuum line(s)
  • Positive crankcase ventilation (PCV) hose(s)/hose joints
  • PCV hose one way valve
  • Sealing washer(s)
  • PCV valve
  • Crankcase vent oil separator
  • PCV oil separator
  1. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
  1. If the concern is not visually evident, verify the symptom and refer to the Symptom Chart.

Symptom Chart

Symptom Possible Sources Action
Oil in the air intake system
*
Blocked or damaged PCV valve
*
Blocked or damaged PCV hose(s)
*
Blocked or damaged PCV hose one-way valve
*
Blocked or damaged crankcase vent oil separator
*
Blocked or damaged valve cover oil separator
*
CHECK the PCV system components for blockages and damage. REMOVE,CLEAN or INSTALL new components as necessary.
*
Turbocharger
*
REFER to Section  303-04I Fuel Charging and Controls / 303-04J Fuel Charging and Controls - Turbocharger.
Excessive crankcase pressure
*
PCV pipe(s)/Hose(s)
*
PCV valve
*
Crankcase vent oil separator
*
Valve cover oil separator
*
CHECK the PCV system components for blockages and damage. CLEAN or INSTALL new components as necessary.
*
Worn or damaged engine components
*
REFER to Section  303-01F Engine.

Diagnosis and Testing|Removal and Installation > < Engine Emission Control