1) Which part of the engine ignites the fuel‑air mixture? a) Fuel Injector b) Spark Plug c) Valve d) Premium air 2) Why does an engine need a cooling system  a) To clean the oil b) To add more fuel c) To keep it from overheating d) To lubricate the engine 3) What are the 3 essential elements required for combustion in a petrol engine? a) Piston, Crankshaft, Camshaft b) Oil, Water, Battery c) Exhaust, Radiator, Tyres d) Fuel, Air, Spark 4) What comes out of the engine after fuel is burned a) Clean air b) Oil c) Exhaust gases d) Water 5) How hot can it get inside an engine cylinder when fuel burns a) 1500–2000 °C b) 200 °C c) 800 °C d) 100 °C 6) Why is it important to carry out maintenance service on your engine a) To make the car look shiny b) To make the garage a lot of money c) To follow the law of owning a car d) To keep the engine running smoothly

How does an engine work

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