Is the Zizzing Sound from a Motorcycle Engine Normal?

1 Answers
StIsla
07/29/25 6:07pm
Motorcycle engine zizzing sound is related to engine oil issues. Below are the specific causes and solutions for engine zizzing noise: Engine oil should not be used beyond its service life: Engine oil has a limited lifespan. Since the engine operates at extremely high temperatures and runs at high speeds, some liquid oil will vaporize into oil mist. This vaporized oil can be expelled from the engine through the crankcase ventilation system, leading to oil consumption. Over time, the effectiveness of the oil diminishes. Using oil beyond its service life not only fails to protect the engine but can also cause damage. Solution: Replace the engine oil.
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