Honda Civic Service Manual: Spark Plug Inspection (R18A9)
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1.
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Remove the engine cover.
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1.
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Remove the ignition coils.
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1.
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Remove the spark plugs.
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Spark Plug - Inspection (Natural Gas Model) |
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 wan:avla:1
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1.
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Inspect the electrodes and the ceramic insulator.
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Burned or worn electrodes may be caused by these
conditions:
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Advanced ignition timing
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Plug heat range too hot
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Fouled plugs may be caused by these conditions:
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Retarded ignition timing
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Oil in combustion chamber
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Incorrect spark plug gap
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Plug heat range too cold
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Excessive idling/low speed running
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Clogged air cleaner element
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Deteriorated ignition coils
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2.
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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.
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NOTE:
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Do not adjust the gap of iridium tip plugs.
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Do not use a plug cleaner.
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Spark Plugs
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NGK:
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SILKR8B8DS
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Electrode Gap
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Standard (New):
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0.7-0.8 mm (0.028-0.031 in)
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1.
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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.
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Specified Torque:
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18 N·m (1.8 kgf·m, 13 lbf·ft)
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1.
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Install the ignition coils.
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1.
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Install the engine cover.
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Removal
1.
Wiper Arm Assembly
NOTE: Set the wiper arms to the auto-stop position before removal.
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1.
Engine Cover
1.
Remove the engine cover.
2.
Ignition Coil
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Spark Plug Inspection (K24Z7)
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