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Home >> Kia >> 2010 >> Forte EX, Standard >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System Diagnosis (ULEV) (1 Of 2) >> DTC P0303: Cylinder3-Misfiredetected >> Inspection Repair >> System Inspection >> Visual Inspection

Visual Inspection

  1. Visually/physically inspect for the following conditions
    • Vacuum hoses in engine room for splits, kinks and improper installation
    • Positive crankcase ventilation valve for improper installation, damaged o-rings and malfunctioning.
    • Verify that the PCM ground connections are clean and properly tightened.
  2. Check MAFS and ECTS for the following conditions:
    • Contamination, deterioration, poor connection or damaged harness
    • The MAF signal displayed on the scantool should increase as engine speed increases
    • The engine coolant temperature displayed on the scantool should close to the actual coolant temperature.
  3. Was a problem found in any of the above areas?

    YES 

    NO 

    • Go to next Inspection procedure
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