Hyundai Tucson: Ignition System / Spark Plug 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 Mx or more

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

Specification: 1.0 ~ 1.1 mm (0.0394 ~ 0.0433 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).
   
Be careful that no contaminates enter into spark plug holes.

Installation
1.
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)

Spark Plug Specifications
Specification ItemSpecificationTypeSILZKR7B11Gap1.0 ~ 1.1(0.0394 ~ 0.0433) ...

Charging System
...

Other information:

Hyundai Tucson (LM) 2010-2015 Owners Manual: Checking the engine oil and filter
Have engine oil and filter changed by an authorized HYUNDAI dealer according to the Maintenance Schedule at the beginning of this chapter. WARNING CALIFORNIA PROPOSITION 65 WARNING Engine oil contains chemicals known to the State of California to cause cancer, birth defects and reproductive ...

Hyundai Tucson (LM) 2010-2015 Service Manual: Cylinder Head Components and Components Location
Components 1. Fuel pump adaptor2. Camshaft bearing cap3. Camshaft front bearing cap4. Exhaust camshaft5. Intake camshaft6. Exhaust CVVT assembly7. Intake CVVT assembly8. Cam carrier9. Cylinder head10. Cylinder head gasket11. Retainer lock12. Retainer 13. Valve spring14. Valve stem seal15. Valve ...

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