Camry Wagon V6-180.5 2959cc 3.0L DOHC (3VZ-FE) (1993)
Spark Plug: Testing and Inspection
SPARK PLUGS INSPECTION
NOTICE:
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Never use a wire brush for cleaning.
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Never attempt to adjust the electrode gap on a used spark plug.
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Spark plugs should be replaced every 100,000 km (60,000 miles).
1. INSPECT ELECTRODE
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Using a megger (insulation resistance meter), measure the insulation resistance.
Standard correct insulation resistance: 10M Ohms or more
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If the resistance is less than specified, proceed to step 4.
HINT: If a megger is not available, the following simple method of inspection provides fairly accurate results.
SIMPLE METHOD:
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Quickly race the engine to 4,000 rpm 5 times.
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Remove the spark plug.
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Visually check the spark plug.
^
If the electrode is dry ... OK
^
If the electrode is wet... Proceed to step 3
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Reinstall the spark plug.
2. REMOVE SPARK PLUGS
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Using a 16 mm plug wrench, remove the 4 spark plugs.
3. VISUALLY INSPECT SPARK PLUGS
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Check the spark plug for thread damage and insulator damage.
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If abnormal, replace the spark plug.
Recommended spark plug:
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ND PQ20R
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NGK: BCPR6EP-11