Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Spark Plug Inspection
Reference: SPARK PLUG REMOVAL AND INSTALLATION
- When servicing the iridium / platinum spark plugs (slender center electrode type plugs), do not touch the center electrode to avoid damage to it. The electrode is not strong enough against mechanical force as it is slender and its material is not mechanically tough.
- Do not clean or adjust gap for the iridium / platinum spark plugs.
Inspect spark plug for the following:
- Electrode wear
- Carbon deposits
- Insulator damage
If any abnormality is found for nickel spark plugs, adjust air gap, clean with spark plug cleaner or replace them with specified new plugs.
For iridium / platinum spark plugs, replace them with new plugs.
Spark plug air gap
"a": 1.0 - 1.1 mm (0.040 - 0.043 in.)
Spark plug type
Non-EVAP-leak-check model: NGK BKR6E-11 (Nickel)
EVAP leak check model: NGK IFR5J11 (Iridium)
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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