ford Workshop Repair Guides

Ford Workshop Service and Repair Manuals

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

Focus 1999 (08.1998-12.2004)

Engine Emission Control - 1.6L Zetec-E (Zetec)/1.8L Zetec-E (Zetec)/2.0L Zetec-E (Zetec) - Engine Emission Control Focus 1999 (08/1998-12/2004)
Diagnosis and Testing

Inspection and Verification

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

Visual Inspection Chart

Mechanical
  • Vacuum line(s)
  • Hose(s)/hose joints
  • Gasket(s)
  • Positive crankcase ventilation (PCV) valve
  • Crankcase vent 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 Chart

Symptom Possible Sources Action
Excessive crankcase pressure
*
PCV pipe(s)/Hose(s)
*
PCV valve
*
Crankcase vent 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  303-01A Engine / 303-01B Engine / 303-01C Engine / 303-01G Engine.

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