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Spark plugs in automobiles generally have a gap between

0.3 to 0.7 mm
0.2 to 0.8 mm
0.4 to 0.9 mm
0.6 to 1.8 mm

Correct Answer: 0.6 to 1.8 mm

Explanation:

Spark plugs in automobiles generally have a gap between 0.6 and 1.8 mm (0.024 and 0.071 in). The gap may require adjustment from the out-of-the-box gap.

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