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
Check spark plug for:
- Air gap
- 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 spark plugs, replace them with specified new plugs if abnormal condition is found in the above check.
Spark plug air gap "a"
Standard: 1.0 - 1.1 mm (0.040 - 0.043 in.)
Spark plug type
Non-EVAP-leak-check model: DENSO K16HPR-U11 (Nickel)
EVAP-leak-check model: NGK SILFR5A11 (Iridium)
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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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