While having a discussion about spark plugs, Technician A says that blistering of the insulator tip is indicative of a plug that has been too hot. Technician B says that the accumulation of specks that resemble pepper is indicative of a plug that has been too hot. Who is correct?
A) A only
B) B only
C) Both A and B
D) Neither A nor B

Question

Quizplus · Accepted Answer

Both technicians are correct. Blistering of the insulator tip indicates excessive heat, and the appearance of pepper-like specks also suggests that the spark plug has been operating at too high a temperature.

While Having a Discussion About Spark Plugs, Technician a Says