Spark Plug Removal/Installation
WARNING: This page is about a different car, the 2017 Mazda CX-5. 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, engine performance will be deteriorated. Install only the specified spark plug when replacing.
- Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)
- Remove the plug hole plate. (See PLUG HOLE PLATE REMOVAL/INSTALLATION .)
- Remove the ignition coils/ion sensors. (See IGNITION COIL/ION SENSOR REMOVAL/INSTALLATION .)
- Remove the spark plugs using a plug-wrench.
- Install in the reverse order of removal.
Spark plug tightening torque
15-20 N.m {1.6-2.0 kgf.m, 12-14 ft.lbf}