一台果园牌２０１０型四轮农用运输车被大修后没多久，机手保养了喷油泵，结果出现了启动困难的故障。修理工检查后，发现喷油泵处于不供油状态。进而检查，发现喷油泵的限压阀弹簧弹性过弱。据机手介绍，保养喷油泵时，不慎丢失了原装的限压阀弹簧，便找了一个弹簧代用。这样 Not long after an orchard brand 2010 four-wheeled agricultural truck was overhauled, the hand maintenance of the fuel pump, resulting in a start-up difficulties. After checking with the mechanic, he found that the fuel injection pump was in a non-fuel condition. Further inspection and found that the fuel injection valve pressure limiting valve spring is too weak. According to the hand introduced, maintenance fuel pump, accidentally lost the original pressure-limiting valve spring, they find a spring alternative. such