Attention! The pressure in the line between the high pressure fuel pump and the injectors must be measured after you make sure that the fuel pressure between the low pressure pump and the high pressure fuel pump is normal.
1. Connect the MUT-II to the diagnostic socket.
Pic. 8.4. Intermediate Connector Location (1) nozzles
2. Disconnect the intermediate connector of the injectors (pic. 8.4).
3. Turn the ignition key to position «ON» («ON»).
4. Select the required item in the menu «Data list» (data table) instrument MUT-II.
5. Crank the engine with the starter for 2 seconds or more and visually check that there is no fuel leakage from the connections.
Attention! If there are fuel leaks, stop the engine immediately and fix the source of the leak.
6. Make sure that the fuel pressure is at least 1 MPa for 20 seconds after the starter has finished cranking the engine crankshaft.
If the fuel pressure is below 1 MPa, then this means a leak in the high pressure line (you need to check the power system).
7. Turn the ignition key to position «OFF» («OFF»).
8. Connect the intermediate connector of the injectors.
9. Start the engine and let it idle.
10. While the engine is idling, measure the fuel pressure. Nominal value of fuel pressure: 4.0–6.9 MPa.
11. Check up that pressure of fuel in an idling mode did not decrease even after several pressing an accelerator pedal.
12. If the fuel pressure does not match the required one, determine the malfunctions and eliminate them in accordance with the table. 8.3.
Table 8.3. Definition of malfunctions and methods of their elimination in the case when the fuel pressure does not correspond to the required one
13. Turn off the engine and turn the ignition key to the «OFF» («OFF»).
14. Disconnect the MUT-II.