The 4 strokes of an engine are intake, compression, power, and exhaust. In a four-stroke engine, the piston goes through these four steps to complete one cycle, and that cycle takes two revolutions of the crankshaft.

Quick Scoop

  1. Intake : The piston moves down, drawing air-fuel mixture into the cylinder.
  1. Compression : The piston moves up, compressing the mixture.
  1. Power : The mixture ignites, forcing the piston down and producing power.
  1. Exhaust : The piston moves up again, pushing out the burned gases.

Simple way to remember

Think: in, squeeze, bang, out. That’s the basic rhythm of a four-stroke engine.

TL;DR

The four strokes are intake, compression, power, and exhaust.