Correct Answer : Option (D) : 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.
Correct Answer : 1 to 99%
Correct Answer : two revolutions of the crankshaft
Correct Answer : Agree