Accord LX Coupe L4-2254cc 2.3L SOHC (VTEC) MFI (1998)
Spark Plug: Testing and Inspection
1. Inspect the electrodes and ceramic insulator.
Burned or worn electrodes may be caused by:
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Advanced ignition timing
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Loose spark plug
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Plug heat range too hot
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Insufficient cooling
Fouled plug may be caused by:
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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 coil or ignition wires
2. Check the electrode gap.
'98-99 models:
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Adjust the gap with a suitable gapping tool.
Electrode Gap
Standard (New): 1.0 - 1 .1 mm (0.039 - 0.043 in.)
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Replace the plug if the center electrode is rounded (A).
Spark Plugs
NGK: ZFR5F-11
DENSO: KJ16CR-L11