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