奔驰272发动机报0746 ,0750 故障代码，更换空气流量计和炭罐电磁阀。
奔驰272发动机报0746 ,0750 故障代码，更换空气流量计和炭罐电磁阀。https://ss2.meipian.me/users/15307481/b4ab2354c6bb4148929fd37d358fa5a0.jpg-mobile
怠速时调节实际值应在0.00％，负4.5％混合气过浓，正3.7％左右混合气过稀。
https://ss2.meipian.me/users/15307481/b95c749b3f77441989d7a9f6afdfbba8.jpg-mobile
https://ss2.meipian.me/users/15307481/6a81f246959444a7bcb038ef63bef43a.jpg-mobile
热量管理里空气质量应在12％
https://ss2.meipian.me/users/15307481/89fa8ae2f436492abbd37c7bb882ad3a.jpg-mobile
https://ss2.meipian.me/users/15307481/d65e4eef7a5a46109d9d5ba4f4875bae.jpg-mobile
https://ss2.meipian.me/users/15307481/c999eb3786d3454c83496e7276a288cb.jpg-mobile
https://ss2.meipian.me/users/15307481/aa8534ca34544bf6ab5b4d62db3d4b6a.jpg-mobile
节气门开度标准是1.3, 如果大于1.3,到2.6要洗节气门。272，273发动机报0746 0750 需要换空气流量计，和碳罐电磁阀，
https://ss2.meipian.me/users/15307481/02b0bc4e801141faa13c20c9e19e1544.jpg-mobile
https://ss2.meipian.me/users/15307481/17ab01863e0349a799f27999935d19e0.jpg-mobile
需要洗节气门
https://ss2.meipian.me/users/15307481/99489dd678f04e7b888507d3ee946bb9.jpg-mobile
更换起停继电器V19
https://ss2.meipian.me/users/15307481/f5f9254039924d889495c91af7a9c138.jpg-mobile
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