SEQUENCE OF WORKS
1. Disconnect the ignition.
2. Disconnect the pressure fuel line from the fuel distribution line, keeping a rag handy to collect any leaking fuel.
3. Even when the engine is not running, some gasoline should leak out, since the fuel system is under pressure.
4. If the pipe is dry, briefly turn on the ignition without turning on the starter.
5. If the fuel pump does not start working, check the fuse or fuse relay.
6. If there is still no gasoline, check the fuel pump relay.
7. The fuel pump should start working.
8. Otherwise, remove the upholstery under the rear seat and tap the pump body with light blows of a hammer - sometimes this helps.
9. Check the reliability of the fuel pump electrical connector connection.
10. If the fuel pump still does not work, turn on the ignition and check the voltage with an LED tester (the test lamp can damage the control unit).
11. If there is voltage, it means the pump is faulty or the wire is broken.
Fig. 10.6. Electric roller rotary fuel pump: 1 – suction side; 2 – safety valve; 3 – filter housing; 4 – rotor; 5 – check valve; 6 – pressure side
12. If the pump is working, but fuel does not flow through the pressure fuel line, the fuel filter or fuel line is clogged, or the fuel line is pinched (Fig. 10.6).
13. If, despite all efforts, the pump does not work, the only option left is to replace it, since the chance of repairing the pump is very unlikely.
[The material was copied from an information website: fordbook.ru]