Mazda 626

1991-1998 of release

Repair and car operation

Mazda 626

+ 1. Maintenance instruction
+ 2. Maintenance
+ 3. Engines
+ 4. Heating and ventilation
- 5. Fuel system
   + 5.1. Nikki 30/34 carburetor
   + 5.2. Power supply system (l engines 1,6 and 1,8)
   - 5.3. Power supply system (l engines 2,0 and 2,5)
      5.3.1. Introduction
      5.3.2. Technical characteristics
      5.3.3. Pressure dumping in fuel system
      5.3.4. Fuel pump and fuel pressure
      5.3.5. Fuel tubes and connections of tubes
      5.3.6. Sensor of a measuring instrument of level of fuel
      5.3.7. Fuel tank
      5.3.8. Casing of the air filter
      5.3.9. Accelerator rope
      5.3.10. Electronic system of injection of fuel
      5.3.11. Butterfly valve casing
      5.3.12. Regulator of pressure of fuel
      5.3.13. Fuel highway and injectors
+ 6. Exhaust system
+ 7. Transmissions
+ 8. Coupling and semi-axes
+ 9. Brake system
+ 10. Running gear
+ 11. Body
+ 12. Electric equipment
+ 13. Electroschemes
+ 14. Good advice

5.3.5. Fuel tubes and connections of tubes


Before the beginning of works, surely lower pressure in fuel system.

Tubes of giving and return of fuel lie from a fuel tank in office of the engine and fasten clips to the lower part of a body.

Steel tubes

For replacement of tubes of fuel system use only steel tubes.

If you weaken connections of tubes, observe the following rules:

1. Try not to bend and not передавить a tube.

2. Replace sealing rings

Flexible hoses

Flexible hoses should not be close to elements of final system.

Removal and installation

Installation of a spring clip

1. Fuel tube

2. 1–2 mm

3. Spring clip

4. Hose

5. 2–6 mm

1. Lower pressure in system.
2. Remove the clips, fixing tubes to a body.
3. In those places where rubber hoses incorporate to metal tubes, spring clips (shooter) are usually used. To remove such clip, it is necessary for compressing flat-nose pliers and to shift up. Installation is carried out similarly.
4. Sometimes in connections quick disconnect clips (1 – a clip are used; 2–pads).


It is necessary to replace all damaged tubes and hoses similar.