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Home >> Kia >> 2017 >> Optima EX >> Repair and Diagnosis >> Engine Performance >> Ignition System >> Ignition System - 2.4L (Except HEV) >> Repair Procedures >> Inspection >> Cleaning >> [2nd Method]
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[2nd Method]

NOTE:
  • The 2nd method should be performed only if the 1st method fails (the misfire-related codes recur).
  1. Start the engine and keep the engine running at idle for 2 minutes.
  2. Drive the vehicle for over 20 minutes, keeping the engine speed above 3500 rpm.
NOTE:
  • If equipped with manual transaxle, shift the gear properly for keeping the engine speed above 3500 rpm.
Fig 1: Engine Speed Above 3500 RPM Timing Pattern
G12146738Courtesy of KIA MOTORS AMERICA, INC.
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