Cadillac difficulty in starting on their own after flameout

        Symptom: an American Cadillac (CADILLAC) car driving on uneven rural roads, the road due to the impact, resulting in strong vibration, resulting in an engine flameout on their own, it is difficult to start after flameout.
        Troubleshooting: First start from the circuit system. After examination, the high-voltage ignition is normal, no problem ignition timing. Since the circuit is no problem, the failure is likely to occur in the oil on the road.
        The car uses electronic fuel injection device. Its working principle is: each sensor to the engine kess v2 speed, load, air enters the amount of emissions, such as electrical input into an electronic control center (computer ECU), the signal from the electronic control center to record, analyze, compare issued after injection volume, injection timing and other work orders, the executing agency executing the instruction. Therefore, the first step should be to check whether the executive body fuel injection device properly.
        First, the fuel injector valve to be checked. The multimeter two test rods were exposed to the injector solenoid valve two terminals, observing voltage indication circumstances. This voltage is controlled by the electronic control center of the output signal is provided, it would normally change with changes choke. Detection result is OK, the fuel injection device failure excluded areas. And then check the fuel pump and found that the pump does not work. Remove the wiring, the car 12V power ck-100 supply with dedicated direct access to the results fuel pump is working properly, indicating that the pump circuit breaker occur. However, check the fuel pump relay, fuse were normal.
        The car pump circuit, the device of a protection switch (a safety device, mounted on top of the car rear luggage compartment). The switch is spring when the vehicle collision will automatically jump, immediately cut off the fuel pump power to stop oil supply. After examination, the spring really jump. Press this spring, the protection switch back ON condition, the fuel pump back to normal, normal car engine, fault elimination.
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