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故障现象一辆行驶里程约为16.8万km的2008年产江淮瑞风商务车(搭载江淮HFC4GA1-B 2.4 L双顶置凸轮多点喷射电控汽油发动机和5速手动变速器,发动机采用德尔福MT20U2管理系统),在正常行驶中发动机突然熄火后无法起动着机。故障诊断接车后,首先对故障现象进行验证,故障症状确如客户所述。拆下第1缸和第4缸的点火线圈及火花塞,起动发动机做跳火试验,火花塞能够正常跳火,说明点火系统应该没问题。于是,拆下发动机供油管,检查
Fault phenomenon A mileage of about 168000 km production of JRC Refinery commercial vehicles in 2008 (equipped with JAC HFC4GA1-B 2.4L double overhead cam multi-injection electronic gasoline engine and 5-speed manual transmission, the engine using the Delphi MT20U2 management system ), The engine can not start after the engine suddenly turns off in normal driving. Troubleshooting After the car is taken, the symptom is verified first, and the symptom of the fault is as described by the customer. Remove the 1st cylinder and the 4th cylinder ignition coil and spark plug, start the engine to do the flashover test, the spark plug to the normal flashover, indicating that the ignition system should be no problem. So, remove the engine oil supply pipe, check