供油壓力低於40PSI就會出現P0171，樓主的車同時出現4個Misfires，應該供油壓力非常低了。僅供參考

來源: 我愛北京大前門於 2019-06-24 16:40:50 [舊帖] [給我悄悄話] 本文已被閱讀：次

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