Honda 2003 Civic Coupe Owner's Manual page 224

Tighten the spark plugs caref ully. A
spark plug that is too loose can
overheat and damage the engine.
Overtightening can cause damage to
the threads in the cylinder head.
8. Install the ignition coil. Reinstall
the nut.
9. Push the wire connector onto the
ignition coil. Make sure it locks in
place.
10. Repeat this procedure for the
other three spark plugs.
11. Reinstall the cover.
Spark Plugs
Specifications:
NGK:
PZFR6F-11
DENSO:
PKJ20CR-M11
Spark Plug Gap:
＋ 0
0.04 in (1.1 mm)
− 0.1 mm
Maintenance
223