Burned or worn electrodes may be caused by these conditions:
－
Advanced ignition timing
－
Loose spark plug
－
Plug heat range too hot
－
Insufficient cooling
Fouled plugs may be caused by these conditions:
－
Retarded ignition timing
－
Oil in combustion chamber
－
Incorrect spark plug gap
－
Plug heat range too cold
－
Excessive idling/low speed running
－
Clogged air cleaner element
－
Deteriorated ignition coils
2.
Replace the plug at the specified interval, if the center electrode (A) is rounded, if the spark plug gap (B) is out of specification, or if the spark plug electrode is dirty or contaminated. Use only the spark plugs listed.
NOTE:
Do not adjust the gap of iridium tip plugs.
Do not use a plug cleaner.
USA and Canada models
Spark Plugs
NGK:
DILZKR7B11GS
DENSO:
DXU22HCR-D11S
Electrode Gap
Standard (New):
1.0-1.1 mm (0.039-0.043 in)
Mexico models
Spark Plugs
NGK:
SILZKR7C11S
Electrode Gap
Standard (New):
1.0-1.1 mm (0.039-0.043 in)
USA and Canada models
Mexico models
Spark Plug
1.
Apply a small amount of anti-seize compound to the plug threads, and screw the plugs into the cylinder head, finger tight, then tighten the plugs to the specified torque.
Specified Torque:
18 N·m
Ignition Coil
1.
Install the ignition coils.
Engine Cover
1.
Install the engine cover.
?
Test yourself
A quick Honda Civic quiz: every answer comes with an explanation and a link to the manual page.
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