K 3500 Truck 4WD V8-6.0L VIN U (2002)
2. Inspect the spark plug gap. Adjust the plug as needed.
Specification
Spark plug gap: 1.52 mm (0.060 in)
3. Hand start the spark plug.
NOTE: Refer to Fastener Notice in Service Precautions.
4. Tighten the spark plug.
Tighten
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For used heads tighten the plug to 15 N.m (11 lb ft).
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For new aluminum heads tighten the plug to 20 N.m (15 lb ft).
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For new iron heads, tighten the plug to 30 N.m (22 lb ft).
5. Install the spark plug wire to the spark plug.
6. Inspect the wire for proper installation:
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Push sideways on each boot in order to inspect the seating.
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Reinstall any loose boot.
7. Install the engine sight shield, if necessary.