Matching Pairs Parts of an EngineOnline version To complete this worksheet, match the engine parts with what they do. by Alison Jack 1 These vaporize gasoline 2 Pistons reciprocate in these 3 Connects pistons with crank shaft 4 The intake manifold is bolted to this. 5 Rotary power output 6 Surrounds engine block 7 Raises and lowers the valves 8 Covers the pistons 9 Ignites the gasoline 10 The carburetor sits on top of this. 11 Lets gas vapor in and exhaust out Piston rods Crank shaft Water jacket Engine block Cylinders Intake manifild Valves carburetor or fuel injector Spark plugs Cam shaft Cylinder heads