Honda 1996 Civic Coupe Owner's Manual page 147

Spark Plugs
5. Torque the spark plug. (If you do
not have a torque wrench, tighten
the spark plug 2/3 turn after it
contacts the cylinder head.)
Tightening torque:
18 N.m ( 1.8 kgf.m, 13 Ibf.ft)
Maintenance
NOTICE
Tighten the spark plugs carefully. A
spark plug that is too loose can
overheat and damage the engine.
Overtightening can cause damage to
the threads in the cylinder head.
6. Install the spark plug cap.
7. Repeat this procedure for the
other three spark plugs.
Specifications:
(U.S.: HX)
NGK: ZFR4F-11
Nippondenso: KJ14CR-L11
(U.S.: DX,EX, Canada: DX,Si)
NGK: ZFR5F-L11
Nippondenso: KJ16CR-L11
Spark Plug Gap:
1.1 m m (0.04 in)