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.
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HOMESERVICE MANUALSMAZDA1999626 ES, 2.5 D, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 192 (IGNITION SYSTEM)SPARK PLUG REMOVAL/INSTALLATION
1999 Mazda 626 ES, 2.5 D, Standard
Spark Plug Removal/Installation
1999 Mazda 626 ES, 2.5 D, StandardSECTION Spark Plug Removal/Installation
WARNING: This page is about a different car, the 2004 Mazda MPV. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
- If a spark plug that is not as specified is installed, sealing performance will be deteriorated. Install only the specified spark plug when replacing.
- Disconnect the negative battery cable.
- Remove the ignition coil. (See IGNITION COIL REMOVAL/INSTALLATION .)
- Remove the spark plug.
Tightening torque
9-20 N.m {91-204 kgf.cm, 79-177 in.lbf}
- Install in the reverse order of removal.
RENDER: 1.0x
NO RELATED
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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.