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故障现象一辆帕萨特B5 1.8T轿车,累计行驶23万km,车主反映低速行驶有时无法加速;该故障出现后将发动机熄火后重新起动,有时加速性能又能恢复正常。故障诊断接车后,经询问车主了解到,该车近几天故障出现得比较频繁,在颠簸路面上行驶时上述故障更容易出现。根据车主的要求,对4个喷油器进行了清洗。根据所描述的现象,怀疑供油不畅或者油管中有空气。在发动机怠速条件下测量燃油系统压力,为0.35 MPa,油压正常。
Fault phenomenon A Passat B5 1.8T sedan, a total of 230,000 km, the owners reflect the sometimes slow speed can not be accelerated; after the failure of the engine will restart after the flame, and sometimes to speed up performance and return to normal. Troubleshooting After receiving the car, after asking the owner learned that the car appeared more frequent failures in recent days, the road above the bumpy road when the fault is more likely to appear. According to the owner’s request, the four fuel injector was cleaned. According to the phenomenon described, it is suspected that the oil supply is poor or there is air in the tubing. Fuel system pressure was measured at engine idle at 0.35 MPa with normal oil pressure.