RX 330 AWD V6-3.3L (3MZ-FE) (2004)
Spark Plug: Testing and Inspection
INSPECTION
INSPECT SPARK PLUG
NOTE:
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Do not use a wire brush for cleaning.
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Do not attempt to adjust the electrode gap of a used spark plug.
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Spark plug should be replaced every 200,000 km (120,000 miles).
a. Check the electrode.
1. Using a mega ohmmeter, measure the insulation resistance.
Correct insulation resistance: 10 MOhms or higher
If the resistance is less then the specified value, proceed to step (d).
HINT: If the mega ohmmeter is not available, do the following simple inspection instead.
b. Alternative inspection Method:
1. Quickly accelerate the engine to 4,000 rpm 5 times.
2. Remove the spark plug.
3. Visually check the spark plug.
4. If the electrode is dry...OK.
5. If the electrode is wet...Proceed to step (c).
6. Reinstall the spark plug.