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1 起动困难一辆凌志LS 400乘用车,装配1UZ-FE型V8发动机,累计行程9万km。该车曾一度出现难以起动现象,但还能维持使用,直到在一次停车后再起动时,毫无着火征兆(起动机可以正常带动曲轴旋转),这才拖到修理厂检修。经修理工检查,有高压电,正时带未断,也未错牙,不存在正时失准的问题。拔下发动机进油管的一端,用起动机转动曲轴,发现无汽油流出,判断为燃油泵不工作。在重点检查燃油泵电路熔丝的同时,对全车熔断器作了一次全面检查,结果均完好。打开行李厢,用闲置的蓄电池给燃油泵直接供电,可清晰地听到燃油
1 difficult to start a Lexus LS 400 passenger car, assembly 1UZ-FE V8 engine, the cumulative trip of 90,000 km. The car once appeared difficult to start, but can still be used until after a stop restart, there is no sign of fire (the starter can normally drive the crankshaft rotation), which dragged to the repair shop maintenance. After the repairman checks, there are high-voltage electricity, the timing belt is not broken, nor the wrong tooth, there is no timing misalignment problems. Unplug one end of the engine into the fuel pipe, with crankshaft crankshaft and found no gasoline outflow, to determine the fuel pump does not work. Focused on the fuel pump circuit fuse at the same time, made a full inspection of the car fuses, the results are intact. Open the luggage compartment, direct fuel to the pump with idle battery, you can clearly hear the fuel