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
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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. |
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Replacement
| PERFORMANCE ORDER |
| 1. Remove an air supply branch pipe. Disconnect an accelerator rope. |
| 2. Mark and disconnect all vacuum hoses. |
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3. Disconnect the socket of connection of the sensor of provision of a butterfly valve. |
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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. |
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DIAPHRAGM OF THE AIR VALVE OF SYSTEM OF ADJUSTMENT OF AIR SUPPLY (ONLY MODELS WITH THE 1,8 L ENGINE)
Check
| PERFORMANCE ORDER |
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1. Check the diaphragm rod course. It has to rise smoothly and опускться. |
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2. Check receipt of depression for a diaphragm and work of a diaphragm. |
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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
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On models 1990-1994 of year of release between the lower plugs of the sensor there should not be a conductivity. |
Check
| PERFORMANCE ORDER |
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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. |
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Adjustment
| PERFORMANCE ORDER |
| 1. Connect an ohmmeter to the lower plugs of the sensor of provision of a butterfly valve. |
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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. |
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Replacement
| PERFORMANCE ORDER |
| 1. Disconnect the connection socket, turn off fixing screws and replace the sensor. |
| 2. Adjust the new sensor. |
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FUEL PRESSURE REGULATOR
Check
You watch subsection 5.2.4.
Replacement
| PERFORMANCE ORDER |
| 1. Disconnect hoses from the regulator. |
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2. Turn off fixing bolts and remove the regulator from a fuel collector. |
| 3. At installation use a new sealing ring. |
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4. Correctly install the fuel pressure regulator:
and – the dvleniye regulator
– a fuel tube
1. Correctly
2. Incorrectly
3. Incorrectly |
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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. |
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2. Disconnect the socket of connection of the valve and measure resistance between valve plugs. |
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Replacement
| PERFORMANCE ORDER |
| 1. Remove the case of a butterfly valve. |
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2. Turn off fixing screws and remove the valve and laying. |
| 3. Installation is carried out upside-down removals. Use new laying. |
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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. |
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2. Release hose collars and disconnect hoses. |
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3. Turn off fixing screws of the air valve (are specified by shooters). |
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4. Remove the air valve. |
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5. Mark injectors and sockets of connection. Release clips of a plait of wires of injectors. |
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6. Disconnect sockets of connection of injectors. |
| 7. Disconnect hoses from the regulator of pressure and a fuel collector. |
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8. Turn off the fixing bolts (are specified by shooters) fixing a fuel collector to an inlet collector. |
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9. Remove a fuel collector with аавтомобиля. |
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10. Number injectors. |
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11. Remove injectors. |
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12. Remove a sealing ring. |
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13. Remove the plug from above of an injector. |
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14. Remove insulators from openings in an inlet collector. |
| 15. Installation is carried out upside-down removals. |
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AIR SUPPLY CASING
Removal
| PERFORMANCE ORDER |
| 1. Mark and disconnect all vacuum hoses. |
| 2. Remove the case of a butterfly valve. |
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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. |
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Installation
Installation is carried out upside-down removals. |
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