瞎起哄一下, 因為在怠速時閥門是全關的, 如果髒了就關不嚴了, 結果進氣太多, 混合氣太稀, 怠速不穩.
瞎起哄一下, 因為在怠速時閥門是全關的, 如果髒了就關不嚴了, 結果進氣太多, 混合氣太稀, 怠速不穩.
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