What is the Detection Method of Fuel Pump Performance?

As a BAIC Fuel Pump Supplier China, share with you.

Some hard faults (such as failure to work, etc.) of automobile fuel pumps are easier to judge, but some intermittent soft faults are difficult to judge. In this regard, the method of detecting the working current of the fuel pump by the automobile digital multimeter can be used to judge its performance. The specific method is as follows.

BAIC Fuel Pump

(1) Put the automobile digital multimeter in the current block, press the function key (SELECT) to adjust to the direct current (DC) block, and then connect the two meter pens in series to the connection line of the tested fuel pump.

(2) Start the engine and press the dynamic recording key (MAX/MIN) of the automobile digital multimeter when the fuel pump is working, and the maximum and minimum currents of the fuel pump can be automatically recorded. By comparing the detected data with the normal value, the cause of the failure can be judged.

Safety precautions for fuel pump failure detection

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1. Old fuel pump

When troubleshooting a vehicle fuel pump that has been used for a long time, this type of fuel pump cannot be dry tested. Because when the fuel pump is removed, there is fuel remaining in the pump casing. During the energization test, once the brush and the commutator are in poor contact, a spark will ignite the fuel in the pump casing and cause an explosion. Very serious.

2. New fuel pump

The newly replaced fuel pump shall not be tested dry. Because the fuel pump motor is sealed in the pump housing, the heat generated by the power on during the dry test cannot be dissipated. Once the armature is overheated, the motor will be burned. Therefore, the fuel pump must be immersed in fuel for the test.

3. Other aspects

After the fuel pump leaves the fuel tank, the fuel pump should be wiped clean in time, and sparks should be avoided near it, and the safety principle of "wire first, then power on" should be followed.

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