Hyundai Tucson Quiz
Engine Electrical System

spark plug

In this manual: Engine Electrical System
General Information — 17Engine Mechanical System — 51Engine Electrical System — 26Emission Control System — 23Engine/Fuel Control System — 44Clutch System — 12MANUAL TRANSMISSION SYSTEM — 12AUTOMATIC TRANSMISSION SYSTEM — 42Four-Wheel Drive (4WD) System — 14Drive Shaft and Axle — 22Suspension System — 30Steering System — 16Restraint — 21Braking System — 47Body Work (Interior and Exterior) — 145Body Electrical System — 162Heating, Ventilation and Air Conditioning — 39
13steps
~78min
3/5difficulty
0102030405024.518N·mlb·ft
Tightening torque found on this page
Done 0 of 13

Description and Operation

Description

The spark plug delivers electrical current from the ignition system to the combustion chamber of a spark-ignition engine to ignite the compressed air-fuel mixture with an electric spark while containing the combustion pressure in the engine. The spark plug has a threaded metal shell that is electrically insulated from the center electrode by a porcelain insulator.

Specifications

Specification

Item Specification
Good SILZKR7B11
Measure 1,0~1,1
(0,0394~0,0433)

Repair Procedures

Inspection

[Vehicle Check]

  1. Increase the engine speed to approximately 3000 rpm three or more times.
  2. Remove the spark plug.
  3. Visually inspect the spark plug wire. If the electrode is dry, the spark plug is normal. If the electrode is wet, check for damage and electrode gap as shown below.

[Component Inspection]

  1. Check the spark plug thread and insulator for damage. If damaged, replace the spark plug.
  2. Check the electrode. Measure the insulation resistance using an ohmmeter. If the resistance is lower than specified, adjust the electrode gap.

    Specification: 10 MΩ or more

  3. Check the spark plug electrode gap. If the gap is greater than the maximum value, replace the spark plug.

    Specification: 1.0 ~ 1.1 mm (0.0394 ~ 0.0433 in.)

CLEANING

Combustion becomes temporarily unstable due to spent fuel and carbon deposits accumulated on the spark plugs after prolonged storage.

[Method 1]

  1. Start the engine and let it idle for 2 minutes.
  2. Depress the accelerator pedal and hold the engine speed at 4500 rpm with the shift lever in the N position to warm up the engine until the coolant temperature reaches 80°C.
  3. Maintain 2500~3000 rpm in the N position for 15 minutes.

[Method 2]

  1. Start the engine and let it idle for 2 minutes.
  2. Drive the vehicle for more than 20 minutes while maintaining engine speed above 3500 rpm.

DEPOSIT

  1. Remove the ignition coil. (Refer to Ignition System – Ignition Coil)
  2. Remove the spark plug (A) using a spark plug wrench.

REMEDY

  1. To install, perform the removal procedure in reverse order.

    Tightening Torque: 14.7 – 24 N·m

Test yourself

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