瞎起哄一下, 因为在怠速时阀门是全关的, 如果脏了就关不严了, 结果进气太多, 混合气太稀, 怠速不稳.
瞎起哄一下, 因为在怠速时阀门是全关的, 如果脏了就关不严了, 结果进气太多, 混合气太稀, 怠速不稳.
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