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 Rotary power output 4 Covers the pistons 5 The intake manifold is bolted to this. 6 Lets gas vapor in and exhaust out 7 Raises and lowers the valves 8 The carburetor sits on top of this. 9 Surrounds engine block 10 Ignites the gasoline 11 Connects pistons with crank shaft Crank shaft carburetor or fuel injector Intake manifild Water jacket Piston rods Cylinder heads Spark plugs Engine block Valves Cylinders Cam shaft