HONDA 2003 Odyssey - Owner's Manual - Manual (Page 318)

Torque the spark plug. (If you do
not have a torque wrench, tighten
the spark plug two-thirds of a turn
after it contacts the cylinder head.)
Tightening torque: Put the new spark plug into the
socket, then screw it into the hole.
Screw it in by hand so you do not
crossthread it. 8. 7.
CONTINUED
Spark Plugs
Maintenance 315
13 lbf·ft (18 N·m , 1.8 kgf·m)
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.
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