Question 1111 Deck Safety

The correct answer is B) a defective ignition system. If a gasoline engine turns over freely but will not start, the most common cause is a problem with the ignition system. The ignition system is responsible for providing the spark that ignites the fuel-air mixture in the engine cylinders, allowing the engine to start and run. If the ignition system is not functioning properly, such as a faulty spark plug, wire, or distributor, the engine will not be able to start, even if other components like the fuel system are working correctly. The other answer choices, such as too heavy a load, weak valve springs, or low lube oil level, are less likely to be the sole cause of an engine that turns over but won't start.