Technician A says that a common cause of top end clatter in a diesel engine is loose set cylinder valves. Technician B says that loose set valves are subject to lower shock loads on opening and closing because they travel less distance. Who is correct?
A) Technician A only
B) Technician B only
C) Both A and B
D) Neither A nor B

Question

Quizplus · Accepted Answer

Technician A is correct because loose set cylinder valves can indeed cause top end clatter in a diesel engine due to improper clearance, leading to excessive noise. Technician B is incorrect; loose valves actually can lead to higher shock loads because they have to travel a greater distance in a shorter amount of time when they finally do close, which can cause noise and potential damage.

Technician a Says That a Common Cause of Top End