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REPAIR MAINTENANCE OPERATION OF MOTOR VEHICLES
Mazda 626 / MX-6 (from 1982 to 1991, the year of issue)

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Mazda 626 / MX-6
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626 / MX-6
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Diesel engine
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Removing and installing toothed belt / installation of the engine camshaft RF
Removing and installing toothed belt / installing valve timing Engine RF-N
System of preheat of the diesel engine
Bleeding the fuel supply system
Check / replacement of the electromagnetic valve fuel cutoff
Check and adjust the engine speed of the engine idling
Fuel injectors
Vacuum pump motor RF
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Fuel injectors



Faulty nozzles may cause severe detonation in the cylinders of the engine and as a result, damage to the liners crankshaft bearing. If you have any signs of detonation leave the engine running at idle and in turn loosen the union nut of fastening of pipelines to the fuel injectors. If loosening nut knocking disappears, it indicates a problem with the nozzles.
The fault injector can be determined consistently weakening union nuts and a fast idle (at warming up the engine). If after loosening nut the engine speed of the engine is not changed, this indicates a malfunction nozzle. The nozzle can be checked on the stand, creating a pressure of 135 bar.
The first signs of working nozzles appear as follows:
- False fire in the engine cylinders;
- Knocking in one or more cylinders of the engine;
- Engine overheating;
- Reduction of engine power;
- Excessively heavy black smoke;
- Increase in fuel consumption.

Withdrawal
Disconnect the negative battery terminal.
Cleaner diesel fuel, or gently clean the outside of the tube fuel supply and return.

A WARNING
When you disconnect the wire from the negative terminal of the battery is erased the memory of electronic storage devices, such as a radio receiver code.


Location flare nuts pipes to fuel injection pump and fuel injectors
Fig. 4.25. Location flare nuts pipes to fuel injection pump and fuel injectors


Unscrew the union nuts on the fuel pump and high-pressure nozzles and remove the tube set (Fig. 4.25)

A WARNING
Do not break the form of bending tubes.

Remove the fuel injectors and place them in the same order in which they were installed on the engine.

A WARNING
In the combustion chamber through the holes for the injectors must not be exposed to dirt.
Each hole of the fuel injector is wavy gasket and washer, which must be replaced.

Needle nozzles must not be knocked out and rough landing sites. Wooden spatula, remove carbon from the nozzles.

A WARNING
In no case do not clean the nozzle and nozzle needle wire, needle files or sandpaper. Do not confuse the details of different nozzles.

Setting

Install the fuel injector
Fig. 4.26. Installation of the fuel injector 1 - washer; 2 - a fuel injector; 3 - a washer; 4 - wavy lining


Install four new nozzle gasket and four wavy washer (Fig. 4.26).

A WARNING
Observe the installation position of the undulating pads.

Replace the fuel injector, and tighten them to a torque of 65 Nm.

A WARNING
Tightening fuel injectors point exceeding the required may result in deformation, hang needles and other damage.


The weakening of the union nuts of the pipeline to the fuel nozzle to remove the airlock
Fig. 4.22. The weakening of the union nuts of the pipeline to the fuel nozzle to remove the airlock


Connect the fuel return pipe with new gaskets and tighten nuts, having tightened their moment of 25 Nm (see. Fig. 4.22).
All nozzles slightly loosen the union nut of fastening of tubes of high pressure.
Rotate the crankshaft of the engine starter to exit the fuel tubes without air bubbles. Tighten the union nut torque.
Set the air supply pipe and the channel cavity.
Attach the wire to the negative terminal of the battery.
If there are clock, set the time and enter the security code radio.




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