it all started with a camshaft (urgent replacement was required), well, as always, more
The tool used: all kinds of wrenches (open-end, union, heads, torque wrench, drying machine, hammers, brushes, tweezers, of course something else (I just don't remember)
first of all we jack up higher (it is better to do everything in a pit)
we drain the oil, antifreeze, remove all the hoses, tubes, wires, the air filter together with the intake, box and corrugation so as not to interfere, unscrew everything that is screwed to the engine (I will not paint, everything is instinctively clear, the cylinder head and valve cover mounting bolts in in a certain order, (the order is indicated in the books, I can not write because I lost the book).
we climb down! remove the pallet, unscrew the connecting rods and push out the pistons with a stick. we number the pistons in order to put them in the same order, also with inserts (if there is no production)
NEXT HEAD
there was a problem with the wetsuits.
Karoch took out all the wetsuits, disassembled, washed, oiled, decided to immediately pump the oil into them with a syringe, assembled and put it in the HEAD, which had already been washed many times and oiled.
And finally they came to the hero of the occasion himself
developing distribution and rocker
then we mount everything that we dismantled, well, as usual: liquids, filters, etc.
BE VERY CAREFUL, DO NOT HURRY, CHECK EVERYTHING A FEW TIMES,
I did not put one connecting rod liner (I noticed when I put all the pistons, and the liner was extra)) and if I didn’t notice 😮 😮
BUT schA, thank God it drives (fie three times) thrust has increased, the start-up is easier, the consumption is less. more throttle response became. I'm happy with the caroch.
like everything that I remember outlined! I hope that this topic will help someone.
will ask questions, if possible I will answer.
P.S forum helped a lot, if not for him, then he would never have taken up such a thing
Daewoo Nexia is a Korean compact class passenger sedan that replaced the Daewoo Lemans model with the bestseller in Russia in 1994 and is still being produced practically unchanged in Uzbekistan. In addition to Uzbek and Korean, on the roads of Russia there are “Rostov” and “Taganrog” copies of the late 90s (on the “Rostov”, as well as on the Korean, unlike the “Uzbek” and “Taganrog”, bumpers painted in body color were installed and other rear lights). In the automotive market of Asian countries, Daewoo Nexia was supplied under the name Daewoo Cielo.
The exterior of Daewoo Nexia is already difficult to assess, such as the exterior of the VAZ 2110 car, it has become so familiar. It can be said unambiguously that the design of Daewoo Nexia is unlikely to represent any artistic value, however, this is hardly important for an inexpensive utilitarian car. In 2003, the "Uzbek" Nexia underwent restyling - the bumpers began to be painted in the body color, the radiator lining changed (in addition, in the "DOHC" version, the rear crystal lights and trim on the trunk lid were installed on the car, the moldings became wider). Although our compatriot knows the car Daewoo Nexia exclusively with a sedan body (only such cars were assembled in Russia and Uzbekistan), the range of Daewoo Nexia (Daewoo Lemans) bodies in Korea also included three- and five-door hatchbacks.
Inside, Daewoo Nexia looks very conservative - straight lines and dark tones prevail. From today's point of view, the interior design of Daewoo Nexia is undeniably outdated, but from a functional point of view, it is still quite comfortable.
The Nexia engine range consists of two gasoline engines: the first - with a volume of 1.5 liters and 16 valves with two camshafts, produces about 90 hp. (this engine was installed on the "Korean" Daewoo Nexia from the very moment of their appearance, and on the "Uzbek" - only since 2003), the second - an 8-valve single-shaft with a volume of 1.5 liters produces about 75 hp.
Front suspension Daewoo Nexia - McPherson type. Rear suspension Daewoo Nexia -. Both front and rear Daewoo Nexia has anti-roll bars. The ground clearance height (clearance) of Daewoo Nexia is 150 mm. Nexia was often equipped with an ABS system, in which case the car has disc rear brakes. The Daewoo Nexia has a rack and pinion steering gear, equipped with an optional hydraulic booster.
Daewoo Nexia is a front-wheel drive vehicle equipped with both a mechanical 5-speed and an automatic 4-speed (3-speed + OVERDIVE) gearbox.
Daewoo Nexia, due to the simple suspension of a rather old design, cannot boast of impeccable handling, however, when using the car not for racing, but as a family car, the suspension capabilities should be quite enough.
Based on 10 years of operating experience, Nexia can be described as reliable. Even the suspension of Daewoo Nexia, due to its simple design, rarely requires attention. In no case should you forget about timely and full-fledged service of Daewoo Nexia. The durability of the Daewoo Nexia transmission and engine will depend on compliance with the operating rules: the manufacturer recommends changing the oil in gasoline engines - every 15,000 km, in an automatic transmission - every 30,000 km. It should also be noted that when replacing a timing belt with a Daewoo Nexia on any of the above engine types, the rollers should also be changed (this will save, at least, from re-paying for the same work after a while, if you have time, otherwise in the same case, a jammed roller will inevitably lead to a rapid breakage of the timing belt and the meeting of valves with pistons).
This article contains a collection of elements of car equipment, and all electrical circuits for Daewoo Nexia are here.
1. Diagram of the Daewoo Nexia G15MF (SOHC) engine:
2. Details and assemblies of the A15MF (DOHC) engine:
3. Diagram of the Daewoo Nexia F16MF (DOHC) engine:
4. Diagram of the engine crankcase ventilation system, as well as parts of the suspension support of the power unit. Possible motor malfunctions, their causes and remedies:
6. Details of the exhaust system:
7.Scheme of the design of fuel supply and capture of its vapors:
8. Components of the Daewoo Nexia gearbox:
9. Scheme of the main gear and differential:
11. Steering gear without power steering, as well as the reasons for the breakdown of the steering and how to troubleshoot:
12. Diagram of the power steering gear:
13. Possible causes of a malfunction of the power steering and troubleshooting methods, as well as parts of the steering column of a Daewoo Nexia car:
14. Diagrams of Daewoo Nexia equipment systems: service brake system and front wheel brake mechanism:
15. Diagram of the master brake cylinder with a vacuum booster:
16. Brake mechanism of the rear wheel Daewoo Nexia:
17. Parking brake actuator:
18. Details of the rear wheel brake:
19. Layout of electrical wiring connectors and contacts with "ground" on the Daewoo Nexia car (purpose of electrical connectors), as well as circuits protected by fuses:
20. Mounting blocks Daewoo Nexia N100 and N150 are identical in design and electrical circuit switching, the only difference is in the way of access to them. Location of fuses and relays on the front side and bottom of the mounting block:
21. Types and purpose of fuse relays in the mounting block:
22. Block of heating, ventilation and air conditioning system Daewoo Nexia:
23. Diagram of air movement in the heating and air conditioning unit:
24. Schematic diagram of the movement of refrigerant in the air conditioning system of a Daewoo Nexia car:
Daewoo Nexia is a car that meets modern requirements for safety, quality, efficiency, dynamism, design and manufacturability. To maintain the high technical characteristics of the Daewoo Nexia car, like any other car, preventive maintenance and repairs are required during the operation.
There are complex malfunctions and failures that are recommended to be eliminated in the workshop conditions, but there are those that are completely removable directly by the car owner. Let's try to determine the feasibility of repairing a Daewoo Nexia car directly by the owner, without the help of car service specialists and the possibility of carrying it out in full compliance with the technological maps and regulatory documents of the manufacturer.
Daewoo Nexia engine failures, up to the inability to start, are often the result of a malfunction in the fuel system. The probable cause of such violations may be a malfunction of the fuel pump.
The design of the fuel pump allows you to restore its functionality. For this, it is recommended to perform technological operations:
dismantling the fuel pump from the car;
dismantling the hose;
dismantling the fuel pump from the bracket.
Let's move on to the next operation:
There is a structural recess in the center of the cover, which serves as a support for the motor shaft.
We perform the following operations:
production of a metal plate with a thickness of about 2 mm (by the size of the recess);
placing the plate in the recess on the lid.
If, as a result of the operations carried out, it was not possible to achieve the desired result, then it is possible to use an appropriate structural element from GAZ or VAZ cars.
Increased brake pedal travel, as well as its "softness" indicates a lack of tightness in the brake system. In this case, the brake master cylinder must be replaced or repaired.
special wrenches designed for unscrewing the brake cylinder pipe fittings;
a pear or syringe for pumping out the brake fluid from the reservoir;
pliers;
screwdriver.
selection of brake fluid from the reservoir (using a pear or syringe);
release of brake pipe fittings from the cylinder and rear wheel pressure regulators ( key 22 is used);
unscrewing the nuts securing the cylinder to the brake booster;
disconnecting the brake pipes from the cylinder.
It is not very difficult to carry out self-assembly - a new master brake cylinder.
removing the sealing ring from the brake cylinder;
removing the retaining ring (using a screwdriver);
removing, lubricating the cuff with brake fluid and replacing the installed brake cylinder component parts with new parts;
fixation with a retaining ring;
disconnecting the rear wheel adjusters from the brake cylinder;
disassembly, rinsing, cleaning of regulators from contamination;
assembly and installation of pressure regulators on the master cylinder.
When disassembling and replacing component parts, the main thing to remember is the order of their assembly, otherwise there will be problems with their installation in their original place.
Do-it-yourself Daewoo Nexia repair requires the mandatory observance of some rules:
Before carrying out maintenance or repairs, disconnect the battery earth cable, taking all appropriate precautions. This will prevent the occurrence of a short circuit and, as a result, the occurrence of dangerous situations that pose a threat to the health and life of the car owner, leading to damage not only to the battery, but also to the car.
When dismantling the air cleaner, after completing the process, it is recommended to close the intake pipes in order to exclude the possibility of ingress of objects that cause engine failure.
dismantling the steering column;
unscrewing the bolts fixing the switch (using a hammer and chisel);
installation of a new ignition lock (in reverse order). In this case, the fastening bolts must be replaced with new ones.
If the economic component of Daewoo Nexia repair is important to you and you have the necessary knowledge of the technology for carrying out the relevant types of work, then doing the repair yourself will not be a big deal for you. It is enough to be self-confident, have a special set of tools and free time. We hope that our article has become informative and useful for you.
VIDEO Daewoo Nexia is a modern reliable car, which, nevertheless, may also need to be repaired. There are breakdowns that are best eliminated in a car service, but some malfunctions are quite amenable to self-correction. Let's try to figure out in what cases it may be necessary to repair "Daewoo Nexia" with our own hands and how to correctly implement it.
If the Daewoo Nexia engine starts to work unstably or the car simply refuses to start, then this may be due to a breakdown of the fuel pump, which can be easily corrected on its own.
VIDEO
To return the parts to its functionality, it is necessary to remove it from the bracket, and then remove the filter and hose. Next, we take a screwdriver, straighten the rolling and take out the cover.
Please note that the operation must be carried out from the side of the intake pipe.
In the removed cover there is a recess where you need to place a metal plate. You can make this element from scrap materials, the main thing is that it has a suitable size. After that, the cover should be placed in its rightful place.
These simple manipulations allow you to restore the tightness of the gas pump, but if after they are carried out this part is not restored, then it can replace with the corresponding element from GAZ or VAZ cars .
Too soft brake pedal indicates a malfunction of the brake cylinder, which can be replaced or repaired by yourself. To fix a part with your own hands, you need to stock up on:
keys for 10, 12, 13 and 22;
a bulb or syringe designed to pump out brake fluid;
a screwdriver;
pliers;
brake fluid.
First, we pump out the brake fluid with a pear or a special syringe. Next, release the rear wheel pressure regulator cylinder using a 22 key.
Note that you should start at the bottom of the regulator.
The cylinder is fastened with nuts, which must be unscrewed, after which it is necessary to disconnect the pipes extending from the part. If you decide install a new part , then in this case it remains to attach it and how to pump it.
If you decide to completely adjust the operation of the brake cylinder on your own, then you need to remove the O-ring from the spare part and use a screwdriver to remove the retaining ring. Next, free all the insides of the cylinder, shake them well and place them in their original place.
When extracting parts, it is important to remember in what order they are placed, otherwise it will be extremely problematic to place them in their original places.
Repair manual for Chevrolet Niva is here.
If the repair of "Daewoo Nexia" involves working with the engine, then it is necessary to disconnect the battery wire of the battery, which will help to avoid short circuits.
If it is necessary to remove the air cleaner, the intake lines must be closed after completing the procedure. Thus, it is possible to prevent the entry of objects that can lead to damage to the Daewoo Nexia engine.
VIDEO
Self-installation of the ignition lock in this car is as follows: you must first remove the screws with self-tapping heads, for which you need to prepare a hammer and chisel. Next, the steering column is removed and the switch mounting bolt is unscrewed. Then, in the reverse order, install a new switch.
If you want to save money and at the same time you feel the necessary confidence in yourself, you can carry out an independent repair of the Daewoo Nexia. In this situation, you will need the right tools, a certain amount of time and the relevant information that can be obtained in this article.
VIDEO
To read the manual, click on the picture. To save the manual to your computer, right-click on the link and select "Save Link As ..".
Baby DEU Nexia recently celebrated its twentieth anniversary. Praise her is not in vain! Especially - for the reliability, intelligibility, simplicity of the machine. Simplicity that gives maximum opportunities for the auto-tuning lover!
Tuning Daewoo Nexia usually concerns all aspects of the "life" of the automobile organism. Improving the appearance of an international runabout is the sacred duty of the domestic admirer of Nexia. Redesigning the engine, transmission and suspension is an absolute must. Improving the comfort of using a car is more an art than an engineering, and there is no limit to perfection.
Where to start the creative process? Of course, with the engine upgrade!
Engine tuning Daewoo Nexia
Complexity tuning engine DEU Nexia consists in the difficulty of acquiring high-quality parts and assemblies for an old and, frankly, weak motor. Among the masters of amateur tuning, it is believed that a one and a half liter unit that produces (issued) in a new form as much as 75 horsepower to tune. meaningless.
Say, the expected increase in power in any case will not exceed 30 horsepower. At the same time, there is a great risk of reducing the resource of all highly loaded machine units. Of course, you can contrive and buy a tuning kit for a piston group and a German-made gas distribution mechanism. But, firstly, this is a rare commodity, and it is not easy to find it. Secondly, it is cheaper to purchase, debug and install a new power unit of higher power. Only then the name Daewoo Nexia will sound really proud, and in her movements the Korean beauty will become like a cheetah.
There is a rational sense in such reasoning. According to professional mechanics, as a motor tuning Daewoo Nexia it is really worth installing a mechanical air-fuel blower (compressor).However, the issue of pressure produced by the compressor must be taken into account.
The fact is that even not very efficient (but quite reliable) domestic-made blowers are capable of supplying a combustible mixture to the cylinders at a pressure significantly exceeding atmospheric pressure. For regular parts of a weak Nexia, such an increase can be fatal. One has only to "overfeed" the motor a little, as local overheating occurs, as a result of which the pistons, connecting rods, shafts and timing valves will not withstand.
So if you decide to start engine tuning Daewoo Nexia from the installation of a mechanical blower, limit the pressure rise to half an atmosphere.
Deep technical engine tuning Daewoo Nexia carried out infrequently. To improve the power unit, the following work is performed:
installation of a camshaft with high valve lift;
boring of cylinders for increased piston size;
grinding the intake manifold;
installation of the blower and controller;
installation of a zero resistance air filter;
installation of a straight-through muffler and a high-capacity exhaust manifold.
For rebuilding the motor DEU Nexia you will need to purchase forged pistons, reinforced connecting rods, a lightweight flywheel; reinforced and lightweight gas distribution mechanism. Brake pads with improved frictional characteristics, as well as enhanced grip, are also required.
Serious modernization of the standard motor Daewoo Nexia more suitable for street racers. However, car enthusiasts looking to improve vehicle dynamics can also benefit from technical creativity. The most important thing is that after reworking the motor, do not forget about flashing the ECU! Otherwise, the effect of retrofitting the motor unit will not be sufficient.
Let's not blame the engineers of the Korean concern for unwillingness to create a universal firmware for the motor. Squeezed by environmental standards and the fashion for low fuel consumption, they are forced to reduce the power indicators of their offspring. Therefore, the main goal chip tuning Daewoo Nexia is an increase in engine power while maintaining a moderate fuel consumption.
The expected effect depends not only on the qualifications of the master, but also on the preferred operating mode of the engine, the depth of the design changes made and the type of electronic control unit (ECU).
Chip tuning DEU Nexia can be considered successful if, after reconfiguring the electronics, the power of the standard atmospheric engine increases by 5–10%, and the increase in torque is 10–18%. According to experts, in an engine retrofitted with a supercharger, after reconfiguring the electronics, the power can be increased by 20-25%. In this case, the torque increases by 15-20%.
Such indicators are not the limit, however, “squeezing out” even larger percentages of growth inevitably entails a sharp decrease in the resource.
Anyone who has traveled more than one thousand kilometers to Nexia knows that the main problems of the model are stupid "thoughtfulness" during acceleration, tangible "failures" during active acceleration, feverish twitching when shifting gears during jams in traffic jams.
According to users, the acceleration dynamics of a Korean car does not always correspond to the engine power declared by the manufacturer. As a result, attempts to actively drive Daewoo Nexia always end with a rapid emptying of the fuel tank.
Only by tuning the engine and chip tuning DEU Nexia it is possible to achieve a simultaneous improvement of such opposite parameters as an increase in power and a decrease in fuel consumption. Nevertheless, each car owner should choose the most suitable firmware version, focusing either on the economy of the engine or on increasing its dynamic efficiency.
What is the chip tuning of the Nexia?
the main task chip tuning Daewoo Nexia - competent change of the standard program, "sewn" into the electronic engine control unit.The database of the control program is a collection of correction and calibration values for different operating modes of the power unit.
The ECU, receiving control signals from the sensors, regulates the operation of the executive systems, "fitting" the motor into the frames specified by the designer. Tuning firmware Daewoo Nexia contains modified correction factors that change idle speed, injection moment, ignition timing, maximum revolutions and vehicle speed.
Fulfill chip tuning DEU Nexia on their own - inexpensive pleasure, but risky. Equipment (a programmer and a set of software) for reconfiguring an ECU is not cheap, so it is rarely bought. You can rent a programmer for the occasion, but. improper handling of electronics instead of the expected improvement will have a negative effect.
It is no less risky to blindly trust the "first comer" workshop, where they will tell you that they know how to chip Nexia motors. Only a careful study of the reviews of the owners, satisfied chip tuning Daewoo Nexia , can lead you to competent specialists.
Skeptics of the described procedure are advised to ride a chip Daewoo Nexia ... The difference in dynamics is felt from the first minutes of the trip. The reconfigured engine becomes not only more powerful, but also more flexible. He confidently pulls in all rev ranges and rarely (and most importantly, always reasonably) "asks" the driver to switch to a lower gear.
We have collected data on the increase in engine dynamic characteristics of the three most common naturally aspirated powertrains. DEU Nexia and found out what is the average cost of chip tuning at this point in time. It turned out that a 1.4-liter engine after chipping reaches 110 hp, and the procedure costs from 6,000 to 6,500 rubles. Modifications with a large combustion chamber volume require higher costs: the issue price in the spring of 2015 reaches 8500 rubles.
After installing the new ECU firmware, it makes sense to dismantle the catalyst, which takes at least 2% of the engine power even in good condition. Before starting work, assess the condition of the device. If it is hopelessly clogged, which is typical for most used Nexias, then it is better to get rid of the part that has become a hindrance. By comparing the cost of a flanged spacer to the price of a new catalyst ($ 200), you have another argument for simplifying the exhaust system.
Important. After chip tuning DEU Nexia it is necessary to refuel with fuel of a brand not lower than "Premium 95".
Technical tuning of the body and suspension
One of the most popular body finishing on DEU Nexia is the installation of front and rear frame amplifiers. The rear links between the wheel arches and the floor, increasing the durability of the body, preventing deformation and thereby reducing the risk of skidding. The manufacturers of these devices claim that after installing the spacers, the rigidity of the body increases by 20-25%. However, we did not find references to the results of bench tests confirming these figures.
Front (engine compartment) amplifiers are a well-known phenomenon and have been repeatedly tested in passenger cars of small and middle class. Elegant power elements allow to restore the damaged body geometry and prevent spontaneous changes in the camber angle, practically without interfering with engine maintenance.
Suspension tuning Daewoo Nexia will not be complete if the lower brace (stiffener) is not installed. This passive safety attribute provides:
- Prevention of spontaneous divergence of the lower suspension arms;
- stabilization of the value of wheel alignment;
- decrease in the amplitude of body vibrations.
Tuning thrust also increases the caster angle (inclination of the wheel steering axis). The last parameter improves the handling of the car when entering and exiting a turn, braking and accelerating.
The most interesting and useful is the alternative lower strut for Daewoo Nexia , conveniently and simply adjustable "on site" by means of a threaded connection.
Note that the installation of the lower amplifier is straightforward. With one assistant, you can install it in 20-30 minutes.
For fans of a sporty driving style, we advise you to install on DEU Nexia set of rigid springs shortened by 40 mm. This is the maximum that can be done without changing the standard shock absorbers to tuning ones.
Video (click to play).
In addition to improving handling by lowering the center of gravity, such a refinement has a positive effect on the appearance of the car.
