Acura 2000 TL Owner's Manual page 221

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Spark Plugs
4. Use a wrench to remove the
hexagon socket head cap bolt
holding the ignition coil. Remove
the ignition coil by pulling it
straight out
5. Remove the spark plug with
a five-eighths inch (16 mm) spark
plug socket
Maintenance
6. 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.
7. 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:
13 Ibf-ft(18N-m,1.8kgf-m)