Repair Procedures: Cleaning

2017 Kia Rio EX, 4D HatchbackSECTION Cleaning

The combustion temporarily becomes unstable, due to the aged fuel and the carbon deposits accumulated on the spark plug (s) after long-term storage.

[1st Method] 

  1. Start the engine and keep the engine running at idle for 2 minutes.
  2. Step on the accelerator pedal and hold it steady at 4500 RPM with the shift lever in N position to warm up the engine until the temperature of the engine coolant reaches 80°C.
  3. Keep the engine running at 2500 ~ 3000 RPM in the N position for 15 minutes.
    Fig 1: RPM And Time Graph (First Method)
    G11844918Courtesy of KIA MOTORS AMERICA, INC.

[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.
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.