不冒藍煙,說明valve stem seal不漏。可能是valve and valve seat漏,即排氣衝程中,進氣門關閉不嚴,廢氣從進氣門返呲回來,不冒藍煙。可打壓試一下(我買的表約$20)
不冒藍煙,說明valve stem seal不漏。可能是valve and valve seat漏,即排氣衝程中,進氣門關閉不嚴,廢氣從進氣門返呲回來,不冒藍煙。可打壓試一下(我買的表約$20)
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