Safety Precautions for Fuel Pump Failure Detection

1. Old fuel pump

When troubleshooting fuel pumps for vehicles that have been used for a long time, these fuel pumps should not be dry tested. Because when the fuel pump is removed, there is fuel remaining in the pump casing. During the power-on test, once the brush and the commutator are in poor contact, sparks will ignite the fuel in the pump casing and cause an explosion. The consequences very serious.

2. New fuel pump

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