2. Remove the fuel pump cover (A).
3. Disconnect the fuel pump connector (B).
4. Start the engine and wait until the engine fuel hose is empty.
5. After the engine stalls, turn the ignition key to the "OFF" position and disconnect the wire from the negative terminal of the battery.
Note: Before disconnecting the fuel line, make sure that the pressure in the fuel system is relieved.
6. Disconnect the fuel line (1) from the fuel manifold (2).
7. Connect the pressure gauge adapter (3) between the fuel line and the fuel manifold. Connect the fitting (4) to the pressure gauge adapter. Connect the pressure gauge (3) to the fitting (4), then connect the fuel line (1) to the pressure gauge adapter (5).
8. Connect the wire to the negative terminal of the battery.
9. Apply battery voltage to the fuel pump connector to turn it on. With the pump on, check for fuel leaks through the pressure gauge and connections.
10. Disconnect the wire to the negative terminal of the battery
11. Connect the fuel pump connector.
12. Connect the wire to the negative terminal of the battery.
13. Start the engine and measure the fuel pressure at idle. Nominal value: 343 kPa. If the measured value is lower than the nominal value, this means that there are leaks in the fuel system, the fuel filter is dirty, or the pressure regulator is faulty. If the value is higher than the nominal value, check the serviceability of the pressure regulator.
14. Stop the engine and check the pressure change. The pressure gauge readings should not change within 5 minutes. If the pressure is supplied quickly, check the serviceability of the fuel pump check valve.
15. Disconnect the fuel pump connector.
16. Start the engine and wait until the fuel is completely pumped out.
17. After stopping the engine, turn off the ignition and disconnect the wire from the negative terminal of the battery.
18. Remove the pressure gauge with the adapter and fitting. Connect the fuel pump connector.
19. Connect the wire to the negative battery terminal.
20. Connect the fuel line to the fuel rail.