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Why Won't a Scooter Start After Sitting for a Long Time?

1 Answers

RachelLynn

07/25/25 3:20am

Here are the reasons why a scooter won't start after sitting for a long time: 1. Gasoline deterioration: The fuel in the tank may degrade or become ineffective over time, preventing proper combustion in the cylinder, which makes starting impossible. In this case, the deteriorated fuel needs to be drained. 2. Insufficient engine oil: Oil from the piston rings may flow into the oil pan, reducing sealing performance and causing insufficient cylinder pressure for ignition. Adding a small amount of gasoline or engine oil to the cylinder can help. Below is additional information about motorcycles: 1. Working principle: When the pedal is pressed, the mechanism compresses the spring, causing the outer edge to lift and separate the friction plate from the pressure plate. At this point, the friction plate and flywheel are no longer connected, so even if the engine continues to run, power is not transmitted to the transmission or wheels, allowing the rider to shift gears or stop without stalling the engine. 2. Power transmission: At low crankshaft speeds, the friction plates do not contact the outer shell, preventing power transfer. At higher crankshaft speeds, centrifugal force causes the friction plates to move outward and engage with the outer shell, enabling power transmission.

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