Removal air from the fuel system of a diesel engine (Mazda 121 (3))

When the fuel tank is completely emptied while driving or when parts of the fuel system have been replaced, it is usually not necessary to remove air from it, since it is automatically bled when turned by the starter.

When air is not automatically removed from the fuel system, you need to proceed as follows.

When working with the injection system, it is necessary to follow the rules for cleanliness.

Caution: Make sure that diesel fuel does not come into contact with the coolant hoses. If this happens, clean the hoses immediately.

When the starter is running, loosen all the connections of the high-pressure fuel lines on the injectors one by one and tighten them to a torque of 20 Nm after diesel fuel begins to flow out of the connection.



(Data provided by the website MAZBOOK)

Wipe off any spilled diesel fuel with a soft cloth.