Technician A says that the wrong spark plugs can cause preignition. Technician B says that preignition can possibly lead to engine damage. Who is correct?
A) A only
B) B only
C) Both A and B
D) Neither A nor B

Question

Quizplus · Accepted Answer

Technician A is correct in stating that the wrong spark plugs can cause preignition, which is when the air/fuel mixture in the cylinder ignites spontaneously before the spark plug fires. Technician B is correct in stating that preignition can lead to engine damage, as it can cause high temperatures and pressures that can damage engine components such as piston rings, valves and bearings. Therefore, both technicians are correct.

Technician a Says That the Wrong Spark Plugs Can Cause