长安之星465Q5发动机,大修完后怠速不稳且燃烧不好,尾气呛人。节气门,火花塞,缸线,爆震传感器,氧传感器,甚至汽车电脑都换过。还是没用,正时火位也没问题。就是继续游车。。。。。请各位师傅指教指教
换爆震传感器有所好转,但情况不理想
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