Spark Plug Removal/Installation

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.

Remove the engine cover. (See ENGINE COVER REMOVAL/INSTALLATION .)
Remove the battery cover.
Disconnect the negative battery cable. (See BATTERY REMOVAL/INSTALLATION .)
Position the high-tension lead out of the way. (spark plug side) (See HIGH-TENSION LEAD REMOVAL/INSTALLATION .)
Remove the spark plugs using a plug-wrench.
CAUTION:
- Install spark plugs marked with white paint on the leading side and spark plugs with blue paint on the trailing side.
NOTE:
- It is easier to remove some spark plugs from beneath the vehicle.
Install in the reverse order of removal.

Fig 1: Locating Paint Mark On Spark Plug
Courtesy of MAZDA MOTORS CORP.

Tightening torque 12.8-17.7 N.m {131-180 kgf.cm, 114-156 in.lbf}