Hyundai Accent (HC): Ignition System / Spark Plug

Hyundai Accent (HC) (2017 - 2022) Service Manual / Engine Electrical System / Ignition System / Spark Plug

- Specification

ItemSpecification
TypeSILZKR7E9
Gap0.8 - 0.9 mm
(0.0354 - 0.0394 in.)
Electrode MaterialNickel Alloy

- 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.

- 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.

Spark plug electrode gap : 0.8 - 0.9 mm

   

• 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℃.

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 and Installation

1. Remove the ignition coil. (Refer to Ignition System - "Ignition Coil")

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

3.Install in the reverse order of removal.

Tightening torque : 14.7 - 24.5 N.m (1.5 - 2.5 kgf.m, 10.8 - 18.0 Ib-ft)

   

• Be careful that no contaminates enter into spark plug holes.

Ignition Coil

Starting System

Other information:

Hyundai Accent (HC) (2017 - 2022) Service Manual: ETC (Electronic Throttle control) System

- Description The Electronic Throttle Control (ETC) System consists of a throttle body with an integrated control motor and throttle position sensor (TPS). Instead of the traditional throttle cable, an Accelerator Position Sensor (APS) is used to receive driver input. The ECM uses the APS signal to calculate the target throttle angle; the position of the throttle is then adjusted via ECM control of the ETC motor.

Hyundai Accent (HC) (2017 - 2022) Service Manual: Description and Operation

- Description of ESP Optimum driving safety now has a name : ESP, the Electronic Stability Program.ESP recognizes critical driving conditions, such as panic reactions in dangerous situations, and stabilizes the vehicle by wheel-individual braking and engine control intervention with no needfor actuating the brake or the gas pedal.ESP adds a further function known as Active Yaw Control (AYC) to the ABS, TCS, EBD and ESP functions.

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