Repair Procedures: 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: Time - Speed Graph (1st Method)

   Courtesy of HYUNDAI MOTOR AMERICA

[2nd Method] 

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 2: Time - Speed Graph (2nd Method)

   Courtesy of HYUNDAI MOTOR AMERICA