Method one: turn on the ignition switch, do not start the engine, can hear the fuel pump work for 1-2 seconds, can determine if the fuel pump works;

Method two: disconnect the fuel pump relay, using special jumper wires connect the pump circuit, turn on the ignition switch, and do not start the engine, oil pump works, which shows that the pump can work;

Method three: oil pressure gauges, see if the engine can establish 250KPa hydraulic, hydraulic set up quickly and if properly built hydraulic, describe the oil pump to work, and then turn off the ignition switch and see if the oil pressure release soon in order to determine the oil pump pressure relief valve is working correctly.

Method four: to get the fuel pump circuit, with special measuring tools (such as a beaker) measure the amount of oil and return oil pumps are normal.