Mazda 626

1991-1998 of release

Repair and operation of the car



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)
      5.2.1. Introduction
      5.2.2. Technical characteristics
      5.2.3. Release of pressure from a power supply system
      5.2.4. The fuel pump/pressure in a power supply system
      5.2.5. Fuel tubes and connections
      5.2.6. Removal and installation of the fuel pump
      5.2.7. Fuel level sensor
      5.2.8. Fuel tank
      5.2.9. Air filter
      5.2.10. Accelerator rope
      - 5.2.11. System of electronic injection of fuel
         5.2.11.1. General description
         5.2.11.2. Check and replacement of elements
   + 5.3. Power supply system (l engines 2,0 and 2,5)
+ 6. Exhaust system
+ 7. Transmissions
+ 8. Coupling and half shafts
+ 9. Brake system
+ 10. Running gear
+ 11. Body
+ 12. Electric equipment
+ 13. Electrical circuitries
+ 14. Useful tips


5.2.11.2. Check and replacement of elements

CASE OF THE BUTTERFLY VALVE

Check

PERFORMANCE ORDER
1. Check operation of the connecting mechanism of a butterfly valve. Check that the butterfly valve opened completely.
2. Examine the case of a butterfly valve on existence of wear or deposits.

Replacement

PERFORMANCE ORDER
1. Remove an air supply branch pipe. Disconnect an accelerator rope.
2. Mark and disconnect all vacuum hoses.
3. Disconnect the socket of connection of the sensor of provision of a butterfly valve.
4. Turn off four fixing bolts and remove the case of a butterfly valve and laying.
5. Clear the case of a butterfly valve and blow all channels.
6. Installation is carried out upside-down removals. Tighten fixing bolts till the required inhaling moment.

DIAPHRAGM OF THE AIR VALVE OF SYSTEM OF ADJUSTMENT OF AIR SUPPLY (ONLY MODELS WITH THE 1,8 L ENGINE)

Check

PERFORMANCE ORDER
1. Check the diaphragm rod course. It has to rise smoothly and опускться.
2. Check receipt of depression for a diaphragm and work of a diaphragm.

SENSOR OF PROVISION OF THE BUTTERFLY VALVE

Arrangement of plugs of the sensor of provision of a butterfly valve on models after 1995 of release
 

On models 1990-1994 of year of release between the lower plugs of the sensor there should not be a conductivity.

Check

PERFORMANCE ORDER
1. Insert the probe thickness:
a) On models 1990-1994 of year of release with the automatic transmission – 0,6 mm;
b) On models 1990-1994 of year of release with the mechanical transmission – 1,0 mm;
c) On models after 1995 of release – 1,3 mm
between the lock screw and the lock lever of a butterfly valve (it is specified by an arrow).
2. Check that between plugs of the sensor there was no conductivity.

Adjustment

PERFORMANCE ORDER
1. Connect an ohmmeter to the lower plugs of the sensor of provision of a butterfly valve.
2. Turn off two fixing screws of the sensor (are specified by shooters).
3. Insert the probe of the specified thickness between the lock screw and the lock lever:
a) On models 1990-1994 of year of release with the automatic transmission – 0,25 mm;
b) On models 1990-1994 of year of release with the mechanical transmission – 0,4 mm;
c) On models after 1995 of release – 0,15 mm.
4. Turn the sensor clockwise on 30 °, then turn it back so that conductivity appeared.
5. Insert the probe of the specified thickness and check that conductivity was not:
a) On models 1990-1994 of year of release with the automatic transmission – 0,4 mm;
b) On models 1990-1994 of year of release with the mechanical transmission – 0,7 mm;
c) On models after 1995 of release – 0,5 mm.
6. If conductivity is present, repeatedly adjust the sensor.
7. Tighten two fixing screws.
8. If the sensor does not give in to adjustment, replace it.

Replacement

PERFORMANCE ORDER
1. Disconnect the connection socket, turn off fixing screws and replace the sensor.
2. Adjust the new sensor.

FUEL PRESSURE REGULATOR

Check

You watch subsection 5.2.4.

Replacement

PERFORMANCE ORDER
1. Disconnect hoses from the regulator.
2. Turn off fixing bolts and remove the regulator from a fuel collector.
3. At installation use a new sealing ring.
4. Correctly install the fuel pressure regulator:
and – the dvleniye regulator
– a fuel tube
1. Correctly
2. Incorrectly
3. Incorrectly

THE VALVE OF ADJUSTMENT OF AIR SUPPLY IN THE IDLING MODE


Prevention

For adjustment of speed of idling it is necessary to address experts.


Check

PERFORMANCE ORDER
1. Check that the speed of operation of the engine increased approximately to 1200 rpm at a valve detachment. If speed does not increase, replace the valve.
2. Disconnect the socket of connection of the valve and measure resistance between valve plugs.

Replacement

PERFORMANCE ORDER
1. Remove the case of a butterfly valve.
2. Turn off fixing screws and remove the valve and laying.
3. Installation is carried out upside-down removals. Use new laying.

FUEL COLLECTOR AND INJECTORS

Check

You watch subsection 5.2.11.

Replacement

PERFORMANCE ORDER
1. Disconnect hoses of system of ventilation of a case from a head of the block of cylinders and an inlet collector.
2. Release hose collars and disconnect hoses.
3. Turn off fixing screws of the air valve (are specified by shooters).
4. Remove the air valve.
5. Mark injectors and sockets of connection. Release clips of a plait of wires of injectors.
6. Disconnect sockets of connection of injectors.
7. Disconnect hoses from the regulator of pressure and a fuel collector.
8. Turn off the fixing bolts (are specified by shooters) fixing a fuel collector to an inlet collector.
9. Remove a fuel collector with аавтомобиля.
10. Number injectors.
11. Remove injectors.
12. Remove a sealing ring.
13. Remove the plug from above of an injector.
14. Remove insulators from openings in an inlet collector.
15. Installation is carried out upside-down removals.

AIR SUPPLY CASING

Removal

PERFORMANCE ORDER
1. Mark and disconnect all vacuum hoses.
2. Remove the case of a butterfly valve.
3. Turn off the top fixing bolts / nuts (are specified by shooters).
4. Turn off the lower fixing bolt (it is specified by an arrow).
5. Remove a casing.

Installation

Installation is carried out upside-down removals.




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