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Will replacing the valve springs in a car engine affect the engine's lifespan?

1 Answers

EmilioAnn

07/29/25 8:19pm

Generally speaking, replacing them with original factory parts will not have any impact. Below is relevant information about valve springs: The valve spring in a car ensures that the valve seats promptly and fits tightly, preventing valve bounce during engine vibration, which could damage the valve seal. The preload generated during the installation of the valve spring through pre-compression is used to overcome the inertial force of the valve and its transmission components when the valve closes, eliminating gaps between transmission components caused by inertial forces to achieve its function. Valve springs can be damaged due to poor quality, weak spring force, misalignment, or breakage. When the engine is idling, the sound of the valve spring can be clearly heard on the valve cover, sometimes accompanied by a buzzing noise. In severe cases, the vehicle's acceleration performance may decrease, accompanied by difficulty starting and poor operation of individual cylinders.

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