An engine has late valve timing. Technician A says that this will cause poor low rpm performance. Technician B says that at higher rpm, engine performance might be acceptable. Who is right?
A)Technician A only
B)Technician B only
C)Both A and B
D)Neither A nor B

Question

Quizplus · Accepted Answer

Late valve timing can lead to poor low rpm performance because the engine may not be able to fill its cylinders effectively at lower speeds, which is what Technician A suggests. At higher rpm, the inertia of the air can help to fill the cylinders more effectively despite the late timing, which can lead to acceptable performance, as Technician B suggests.

An Engine Has Late Valve Timing