不冒蓝烟,说明valve stem seal不漏。可能是valve and valve seat漏,即排气冲程中,进气门关闭不严,废气从进气门返呲回来,不冒蓝烟。可打压试一下(我买的表约$20)
不冒蓝烟,说明valve stem seal不漏。可能是valve and valve seat漏,即排气冲程中,进气门关闭不严,废气从进气门返呲回来,不冒蓝烟。可打压试一下(我买的表约$20)
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