Kia Stinger CK: Ignition System / Spark Plug

Specifications
Specification

Item
Specification
Type
SILZKR8H9G
Gap
0.8 - 0.9 mm (0.0314 - 0.0354 in.)
Electrode Material
Iridium

Description and operation
Description

A spark plug is a device for delivering electric current from an ignition system to the combustion chamber of a spark-ignition engine to ignite the compressed fuel/air mixture therein by means of an electric spark, while containing combustion pressure within the engine. A spark plug has a metal threaded shell, electrically isolated from a central electrode by a porcelain insulator.

Repair procedures
Inspection
[On vehicle inspection]
1.

Accelerate the engine to about 3,000 rpm 3 times or more.

2.

Remove the spark plug.

3.

Check the spark plug visually.

If the electrode is dry, the spark plug is normal.

If the electrode is wet, check the damage and electrode gap as below.

[Component Inspection]
1.

Check the spark plug for any damage on its thread and insulator.

If there is damage, replace the spark plug.

2.

Check the electrode. Measure the insulation resistance with an ohmmeter.

If the resistance is less than the specified value, adjust the electrode gap.

Specification: 10 MΩ or more

3.

Check the spark plug electrode gap.

If the gap is greater than the maximum, replace the spark plug.

Specification: 0.8 - 0.9 mm (0.0314 - 0.0354 in.)

  

If adjusting the gap of a new spark plug, bend only the base of the ground electrode. Do not touch the tip.

Never attempt to adjust the gap on a used plug.

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.

[2nd Method]
  

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.

  

If equipped with manual transaxle, shift the gear properly for keeping the engine speed above 3500 rpm.

Removal
1.

Remove the ignition coil.

(Refer to Ignition System - "Ignition Coil")

2.

Using a spark plug wrench, remove the spark plug (A).

Installation
1.

Install in the reverse order of removal.

Tightening torque:

14.7 - 24.5 N·m (1.5 - 2.5 kgf·m, 10.9 - 18.0 Ib·ft)

Other information:

Kia Stinger (CK) 2018-2023 Service Manual: When the lane ahead is clear

The vehicle speed will maintain the set speed. When there is a vehicle ahead of you in your lane The vehicle will maintain the set speed, when the lane ahead is clear. The vehicle will slow down or speed up within selected speed to maintain the selected distance, when there is a vehicle ahead of you in the lane. (A vehicle will appear in front of your vehicle in the LCD display only when there is an actual vehicle in front of you) If the vehicle ahead speeds up, your vehicle will travel at a steady cruising speed after accelerating to the selected speed.

Kia Stinger (CK) 2018-2023 Service Manual: Economical operation

Your vehicle's fuel economy depends mainly on your style of driving, where you drive and when you drive. Each of these factors affects how many kilometers (miles) you can get from a liter (gallon) of fuel.To operate your vehicle as economically as possible, use the following driving suggestions to help save money in both fuel and repairs: Drive smoothly.

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