Technician A says valve lash can be set on some engines when it is running. Technician B says to break in the rings, on the highway accelerate to 50 mph and coast back to 35 mph at least 10 times. Who is right?
A)Technician A
B)Technician B
C)Both technicians
D)Neither technician

Question

Quizplus · Accepted Answer

Technician A is correct because valve lash can indeed be set on some engines while they are running, particularly on older engines with mechanical valve lifters. This process allows for adjustments to be made when the engine is at its operating temperature, ensuring the valve clearance is set accurately for the engine's normal operating conditions. Technician B's statement about breaking in the rings is not a universally recommended practice for engine break-in and can vary depending on the engine and manufacturer's guidelines.

Technician a Says Valve Lash Can Be Set on Some