周一的召回声明全世界270,000辆雷克·萨斯将更换气门弹簧，这是一个发动机的至关重要的组件，其在某些型号存在瑕疵并可引起熄火。
The recall announced Monday of 270,000 Lexus vehicles worldwide will replace valve springs, a crucial engine component, that are flawed and could cause stalling in some models.
气门维修包括镶配气门座，清洁或更换气门导管，保养凸轮轴和凸轮轴轴承，气门的正时调整。
Valve Service and Maintenance includes installing new seat inserts, cleaning or replacing valve guides, servicing the camshaft and camshaft bearings, and timing the valves.
配气机构是发动机的换气机构，换气过程：控制气门按时关了，保证气配时充分燃烧混合气和排撂废气。
Valve bodies are engines of ventilators, ventilation process: on time and turn off the control valve to ensure full combustion gas mixed with gas and emissions.
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