Service Nissan Sunny with 1991 on 1997 of release in a body n-14.
1. The maintenance instruction
2. Maintenance service
3. Engines
4. Cooling system
5. Heating and ventilation system
6. Fuel and an exhaust system
6.1. Carburettor engines
6.1.1. Specifications
6.1.2. The air filter
6.1.3. A temperature regulator of a stream of air
6.1.4. The fuel pump
6.1.5. The gauge of level of fuel
6.1.6. A fuel tank
6.1.7. A cable of a drive throttle заслонки
6.1.8. A pedal of management throttle заслонкой
6.1.9. Fuel
6.1.10. The carburettor
6.1.10.1. Removal and carburettor installation
6.1.10.2. Diagnostics, dismantling and carburettor adjustment
6.1.11. Gauges and carburettor valves
6.1.12. A soaking up collector
6.1.13. A final collector
6.1.14. An exhaust system
6.2. Engines with system of injection of fuel
6.3. System of a food / of release of the fulfilled gases
6.4. System of decrease in toxicity of the fulfilled gases
7. System of start-up of the engine
8. Coupling
9. Transmissions
10. Semiaxes
11. Brakes
12. Suspension brackets and a steering
13. A body
14. An electric equipment
 




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6.1.10.2. Diagnostics, dismantling and carburettor adjustment

Before doing a conclusion about malfunction of the carburettor check up ignition installation, backlashes in candles and in valves, a compression in cylinders.

If in these checks the reason of unsatisfactory work of the engine is not found out, the carburettor should be removed for clearing and repair.

Carburettor dismantling is required as a rule very seldom. Only cleaning of jets and internal channels in most cases is required.

Dismantling

PERFORMANCE ORDER
1. Disconnect a spring from throttle заслонки and check up deterioration of the lever of the accelerating pump.
2. Remove a spring, spring and lock rings and remove the lever.
3. Disconnect a rod air заслонки.
4. Turn away screws and cautiously remove the top section of the case.
5. Check up presence of pollution in поплавковой to the chamber.
6. Remove the first spring of the accelerating pump, a lock ring, the filter and get a ball.
7. Turn on заглушку and get the second spring of the accelerating pump, a counterbalance (the return valve) and a ball.
8. Get the piston of the pump and check up deterioration of the piston and the cylinder.
9. Beat out a float axis, remove a float, the needle valve and a lining поплавковой chambers (on some carburettors the saddle of the needle valve does not act in film).
10. Before dismantling remember an arrangement of all jets.
11. Turn out all fuel and air jets from both chambers, it is forbidden to turn out air jets of idling of the secondary chamber.
12. Turn out заглушки and jets of idling from average section of the case.
13. Turn away screws and remove small диффузоры, get эмульсионные tubes.
14. Turn out the main jet of the primary chamber from a wall поплавковой chambers.
15. Turn out the main jet of the secondary chamber.
16. Remove the restrictive plug and wrap the screw to a contact with an aperture, having counted up number of turns.
17. Turn out the screw completely.
18. If necessary it is possible to turn out coils of valves, cautiously get уплотнители and springs.
19. Check up coils, – at giving 12В плунжеры should be involved.
20. On cars with neutralizer if necessary it is possible to remove the valve of maintenance of structure of a mix for what disconnect a wire, turn away screws and get the valve.
21. Clean jets with application of special means (compressed air does not recommend to blow as it is possible to damage carburettor diaphragms).
22. Wash out case details.
23. Check up a curvature of demountable planes of sections of the case.
24. In need of removal of a detail of an electric equipment of the carburettor disconnect a wire of this detail from a socket.

25. For this purpose a thin screw-driver (1, 4) take away a uvula of a conclusion (5) and push a conclusion with a wire (2), preliminary remove a lock ring in a back part of a socket.
26. Designate each wire.
27. At assemblage replace the worn out details and all complete set of linings and sealants.
28. Assemblage is carried out upside-down.
29. It is forbidden to tighten jets the big effort.
30. Before carburettor installation execute necessary adjustments.

Adjustment of turns of idling and quality of a mix

Subsection 2.2.2 see.

Adjustment of level of fuel in поплавковой to the chamber
The arrow specifies an observation port in the carburettor case.


The prevention

Fuel level in поплавковой to the chamber can be checked up through an observation port. Idling level should be between two labels.


PERFORMANCE ORDER
1. Level adjustment is reduced to the following.
2. Raise and lower a float on the needle valve and measure distance between a float and a plane of the case of the carburettor.
3. If the distance differs from norm adjust, cautiously turning in the axis lever.
4. Turn the case of the carburettor and check up distance between a bottom edge of a float and a demountable plane.
5. If the distance differs from norm adjust, cautiously turning in a terminator uvula.

Adjustment of a corner of opening throttle заслонки

PERFORMANCE ORDER
1. Turn away three screws and remove the thermoelectric drive and a ring.
2. Turn the carburettor, slightly open throttle заслонку and translate the lever of the raised turns of idling on the second step of a cam. Because of the adjusting screw заслонка it will be a little slightly opened.
3. Be convinced that air заслонка it is closed completely.
4. Translate the lever повышеннх idling turns on the second step of a cam.
5. A drill check up a backlash () between throttle заслонкой and a chamber wall.
6. If necessary expose a backlash, rotating the adjusting screw.
7. Establish a ring and the thermoelectric drive.
8. Combine labels on a roof of a drive and on the case air заслонки, tighten screws.

Adjustment air заслонки

1. A uvula

2. The vacuum pump

3. A pneumodrive

4. A diaphragm

5. A backlash

PERFORMANCE ORDER
1. Pull for draught and completely close air заслонку.
2. Completely push a rod into a diaphragm operating with a screw-driver, or having created in a diaphragm depression.
3. Check up a drill a backlash between air заслонкой and a chamber wall (at temperature more low 5 With as control use value of a backlash for 1st position, above 16,5 With – for 2nd position).
4. If necessary adjust a backlash подгибанием a uvula.


6.1.10.1. Removal and carburettor installation

6.1.11. Gauges and carburettor valves