Question

what is an engine intake stroke? a) when the piston moves up forcing exhaust out of the cylinder. b) when the piston moves down drawing air and fuel into the cylinder. c) when the spark plug ignites forcing the piston to the bottom of the cylinder. d) when the piston moves up causing the air/fuel mixture to compress.

Explanation:

In an engine's intake stroke, the piston moves downward, creating a vacuum - like effect that draws in a mixture of air and fuel into the cylinder. Option A describes the exhaust stroke, option C describes the power stroke, and option D describes the compression stroke.

Answer:

B. When the piston moves down drawing air and fuel into the cylinder.