"Well,
they're a trio pretty much alike. The farther off they are the
better I like it."
Tom once more gave his attention to his own boat. He was going at
a fair speed, but not the limit, and he counted on reaching home
in about a half hour. Suddenly, when he was just congratulating
himself on the smooth-running qualities of his motor, which had
not missed an explosion, the machinery stopped.
"Hello!" exclaimed the young inventor in some alarm. "What's up
now?"
He quickly shut off the gasoline and went back to the motor. Now
there are so many things that may happen to a gasoline engine that
it would be difficult to name them all offhand, and Tom, who had
not had very much experience, was at a loss to find what had
stopped his machinery. He tried the spark and found that by
touching the wire to the top of the cylinder, when the proper
connection was, made, that he had a hot, "fat one." The
compression seemed all right and the supply pipe from the gasoline
tank was in perfect order. Still the motor would not go. No
explosion resulted when he turned the flywheel over, not even
when he primed the cylinder by putting a little gasoline in
through the cocks on the cylinder heads.
"That's funny," he remarked to himself as he rested from his
labors and contemplated the "dead" motor.
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