1. Fuel injector connectors.
2. Fuel injector return line.
3. Brackets for fuel injectors.
4. Fuel injectors.
Attention.
- Leaks in the fuel lines of a pressurized system are dangerous. Fuel can ignite and cause equipment damage, serious injury or even death. In addition, fuel can get on the skin and in the eyes of a person. To prevent this, it is imperative to perform a pressure relief procedure in the power system.
- A person carrying static electricity can cause a fire or explosion that could result in death or serious injury. Before working on the fuel system, you must remove the static charge from yourself by touching the car body.
- If fuel comes into contact with engine parts, it may cause these components to malfunction or cause a fire. Be sure to clean up any spilled fuel with a clean rag.
- Do not allow foreign material to enter the high pressure fuel line. To do this, always tighten the high-pressure fuel line connections to the specified tightening torque.
Note. If the fuel injector is being replaced with a needle, the fuel injector initialization procedure must be performed using the M-MDS tool.
Removing fuel injectors
1. Disconnect the negative battery terminal.
2. Complete the power system maintenance preparation procedure.
3. Remove the decorative engine cover.
4. Disconnect the camshaft position sensor connector.
5. Remove the high pressure fuel lines to the fuel injectors.
6. Disconnect the fuel injector connectors.
7. To turn away hollow bolts and to remove a returnable fuel line of fuel atomizers.
8. Unscrew the fastening nuts and remove the fuel injector brackets.
9. To take fuel atomizers from a head of the block of cylinders.
Installing fuel injectors
1. Fit fuel injectors with brackets.
2. Loosen the common rail fuel rail.
3. Fit new high pressure fuel lines to the injectors.
Attention. During steps 4 and 5, do not tighten the nut on the opposite side.
4. Tighten the new nut (1), shown in the figure, with a torque of 1.8-2.2 Nm.
Note. : replace the part with a new one after each removal.
5. Loosen the nut (1), shown in the figure at an angle of -30°--150°.
6. Tighten the new nut (2), shown in the following figure, with a torque of 1.8-2.2 Nm, then tighten another 177-183°.
Note: replace the part with a new one after each removal.
7. Tighten the high pressure fuel lines of the fuel injectors on the side of the common rail fuel rail to 32-42 Nm.
8. Tighten the high pressure fuel lines on the injector side to a torque of 32-42 Nm.
9. Tighten the Common Rail fuel rail to 20-26 Nm.
10. Tighten the return fuel line of the fuel injectors in the sequence shown in the figure to a torque of 22-26 Nm.
Note: : replace the part with a new one after each removal.
11. Perform the bleed procedure for the fuel lines.