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: Warning type

If the vehicle detected by sensors approaches your vehicle, the warning chime will sound and the warning light will blink on the outside rearview mirror. If the detected vehicle is out of detection range, moving away in the opposite direction or moving slow, or if the vehicle is right behind your vehicle, if the direction of the other vehicle is not heading towards your vehicle, the warning is cancelled.

Kia Stinger (CK) 2018-2023 Service Manual: Fuel Line

Repair procedures Removal Low Pressure Fuel Line [Engine Room <-> Extension Fuel Line] 1. Release the residual pressure in fuel line. (Refer to the Fuel Delivery System - "Release Residual Pressure in Fuel Line") 2. Switch "OFF" the ignition and disconnect the negative (-) battery terminal.

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