Engine operation is being discussed. Technician A says preignition can cause engine damage. Technician B says carbon deposits on the pistons can increase the compression ratio. Who is correct?
A)Technician A
B)Technician B
C)Both technicians
D)Neither technician

Question

Quizplus · Accepted Answer

Both statements are correct. Preignition can indeed cause engine damage by igniting the fuel-air mixture before the intended spark, leading to excessive heat and potential damage. Carbon deposits on the pistons can effectively reduce the combustion chamber volume, thereby increasing the compression ratio, which can lead to issues such as knocking or preignition.

Engine Operation Is Being Discussed