Statistics for Internal combustion engine parts quiz

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What is...	Answer	% Correct
the device that produces electricity	alternator	80%
the part that fires the fuel/air charge	spark plug	79%
the part that seals two surfaces	gasket	60%
the part that transfers power from the engine to the gearbox	clutch	57%
the part that keeps the engine lubricated	oil pump	56%
the part that drives the coolant around the engine	water pump	55%
the abbreviation for an engine with 2 camshafts in the cylinder head	DOHC	51%
the process in a 4 cycle engine that pulls the fuel air charge into the cylinder	intake	51%
the element in air that produces NoX if the engine is running too lean	nitrogen	35%
the part that opens the inlet and exhaust valves in a pushrod engine?	rocker	33%
the part that regulates the flow of coolant	thermostat	33%
the device that produces up to 40,000 volts	coil	29%
the 'disc' like part that drives, or is driven by, the fan belt	pulley	27%
the name for the top of the piston	crown	7%
the largest casting in the engine	cylinder block	7%