Spark Plugs - Honda 1993 Accord Coupe Owner's Manual

Spark Plugs

Spark plugs should be replaced every 24 months or 30,000 miles
(48,000 km), whichever comes first.
Recommended spark plugs:
ZFR5F-11 (NGK) KJ16CR-L11 (NIPPONDENSO)
(for all normal driving)
ZFR6F-11 (NGK) KJ20CR-L11 (NIPPONDENSO)
(for hot climates or continuous high speed driving)
Keep hands away from the radiator fan. The fan may start
automatically without warning and run for up to 15 minutes, even
after the engine is turned off.
CAUTION:
Never use spark plugs with an improper heat range; they will
adversely affect engine performance and durability.
Replace plugs one at a time, so you don't get the wires mixed up.
1. Clean any dirt from around the spark plug base.
2. Disconnect the plug cap, then remove and discard the old plug.
3. Check the gap of the new spark plug before installation.
Plug gap should be:
1.1 mm (0.04 in)
4.Thread the new spark plug in by hand to prevent cross-threading.
5. After the plug seats against the cylinder head, tighten 1/2 turn
with a spark plug wrench to compress the washer.
6. Reinstall the spark plug cap.
CAUTION:
The spark plugs must be securely tightened, but not overtightened.
A plug that's too loose can get very hot and possibly damage the
engine; one that's too tight could damage the threads in the
cylinder head.
Thread in by hand.
PLUG CAP