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