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What Causes the Sizzling Sound After Starting the Car?

1 Answers

MarleyLynn

07/29/25 12:35pm

Car starting with a sizzling sound is mainly caused by releasing the brake too slowly during startup. This is a normal phenomenon. When releasing the brake pedal during startup, the engine already has sufficient power to drive the car forward, but the brake pedal has not been fully released. As a result, the moving wheels are restrained by the brake system, producing a sizzling noise. If the car hasn't been driven for a while, the engine oil will flow back to the oil pan, meaning the top of the engine, specifically the valve chamber, will have less oil. Due to the lack of oil sealing and lubrication for the valves, a sizzling sound can be heard from under the car upon startup. This situation is also normal.

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