2. The 4-Stroke Engine

3. Spark Plug InletValve Exhaust Valve CylinderPiston The 4-stroke Engine

4. Inlet Valve open INDUCTION STROKE The 4-stroke Engine

5. Inlet Valve open Piston downINDUCTION STROKE The 4-stroke Engine

6. Inlet Valve open Piston downINDUCTION STROKE Fuel in The 4-stroke Engine

7. Inlet Valve open Piston downINDUCTION STROKE The 4-stroke Engine Fuel in

8. Inlet Valve open INDUCTION STROKE Fuel in The 4-stroke Engine

9. Inlet Valve Closed COMPRESSION STROKE Piston up The 4-stroke Engine

10. Inlet Valve Closed COMPRESSION STROKE Piston up The 4-stroke Engine

11. Inlet Valve Closed COMPRESSION STROKE Piston up The 4-stroke Engine

12. Inlet Valve Closed POWER STROKE BANG The 4-stroke Engine

13. Inlet Valve Closed POWER STROKE Piston down Powerfully The 4-stroke Engine

14. Inlet Valve Closed POWER STROKE Piston down Powerfully The 4-stroke Engine

15. Inlet Valve Closed POWER STROKE The 4-stroke Engine

16. Inlet Valve Closed EXHAUST STROKE Exhaust Valve Open The 4-stroke Engine

17. Inlet Valve Closed EXHAUST STROKE Exhaust Valve Open Piston up Exhaust Gases Out The 4-stroke Engine

18. Inlet Valve Closed EXHAUST STROKE Exhaust Valve Open Piston up Exhaust Gases Out The 4-stroke Engine

19. Inlet Valve open INDUCTION STROKE Exhaust Valve Closed The 4-stroke Engine

20. And So The Cycle Continues!!