Origin of spark plug
Examples from the Web for spark plug
He was just finishing with the spark-plug when the confidence of the air service boys received a sudden jolt.Air Service Boys Over The Enemy's Lines|Charles Amory Beach
The spark-plug is a particularly delicate part, subject to many possible accidents.
In a loop aerial, eight miles up, it might sound like a spark-plug, or it might sound like something else.Morale|Murray Leinster
In automobile-motors, however, the spark-plug only too often fails to perform its function.
This point will vary with different methods of ignition, as well as the location of the spark-plug or igniter.Aviation Engines|Victor Wilfred Pag