Removal and installation fuel injectors (Mazda CX-5KE)

Attention.

• Leaks in fuel lines in a pressurized system are dangerous. Fuel can ignite and cause equipment damage, serious injury, or even death. Fuel can also come into contact with human skin and eyes. To prevent this, it is essential to perform a pressure relief procedure in the fuel system.
• A person carrying a static charge can cause a fire or explosion, which could result in death or serious injury. Before working on the fuel system, you must discharge static electricity by touching the vehicle body.
• If fuel gets on engine parts, it may cause damage to those components or cause a fire. Be sure to wipe up any spilled fuel with a clean rag.
• Prevent foreign materials from entering the high-pressure fuel line. To do this, be sure to tighten the high-pressure fuel line connections to the specified tightening torque.

Note: If the fuel injector is replaced with a beam, the fuel injector initialization procedure must be performed using the M-MDS tool.

Removal fuel injectors

1. Disconnect the negative battery terminal.

2. Perform the procedure for preparing for servicing the power supply system.

3. Remove the decorative engine cover.

4. Disconnect the camshaft position sensor connector.

5. Remove the high pressure fuel lines leading to the fuel injectors.

6. Disconnect the fuel injector connectors.

7. Loosen the hollow bolts and remove the fuel injector return line.

8. Loosen the mounting nuts and remove the fuel injector brackets.

9. Remove the fuel injectors from the cylinder head.

Installing fuel injectors

1. Attach fuel injectors with brackets.



2. Loosen the Common Rail fuel rail.

3. Install new high-pressure fuel lines going to the injectors.

Caution: Do not tighten the nut on the opposite side during steps 4 and 5.

4. Tighten the new nut (1) shown in the figure to 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 to an angle of -30°--150°.



6. Tighten the new nut (2), shown in the following figure, to a torque of 1.8-2.2 Nm, then tighten it 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 Common Rail fuel rail side to a torque of 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 a torque of 20-26 Nm.

10. Tighten the fuel injector return line 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 procedure for removing air from the fuel lines.

The original article is on [Mazbook]