我问了一个mechanic, 他说有些是正常的,但可以查一下vacuum manifold, 或者尾气系统有无裂缝。如是发动机附近的声音,就是前者了。
我问了一个mechanic, 他说有些是正常的,但可以查一下vacuum manifold, 或者尾气系统有无裂缝。如是发动机附近的声音,就是前者了。
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