Technician A says that an even firing V8 engine has a power stroke start every 90 degrees of crankshaft rotation. Technician B says that a four-cylinder engine will start a power stroke every 180 degrees of rotation. Who is correct?
A) A only
B) B only
C) Both A and B
D) Neither A nor B

Question

Quizplus · Accepted Answer

In an even firing V8 engine, the crankshaft completes two full rotations (720 degrees) to complete a four-stroke cycle for all eight cylinders, resulting in a power stroke every 90 degrees of rotation. Similarly, a four-cylinder engine also completes a four-stroke cycle in two crankshaft rotations, with each cylinder firing once per cycle, leading to a power stroke every 180 degrees of rotation.

Technician a Says That an Even Firing V8 Engine Has