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Honda 1991 Civic User Manual

Honda 1991 Civic
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Spark Plugs
Spark plugs should be replaced every 24 months or 30,000 miles
(48,000 km), whichever comes first.
Recommended spark plugs:
CAUTION:
Never use spark plugs with an improper heat range; they will
adversely affect engine performance and durability.
Spark Plug Replacement
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.
PLUG CAP
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Honda 1991 Civic Specifications

General IconGeneral
BrandHonda
Model1991 Civic
CategoryAutomobile
LanguageEnglish

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