Daewoo Nexia is one of the few cars that have been on domestic roads for over 20 years. Its prototype was the popular sedan Opel Kadett modernized in 1995. Over the years, the Nexia DEU engine was represented by models:

Specifications F16D3

PARAMETER	MEANING
Volume of cylinders, cu. cm.	1598
Power, l. s / about. in min.	106/6000
Torque, Nm/rev. per minute	142/4000
Number of cylinders	4
Valves per cylinder	4
Cylinder diameter, mm	79
Piston stroke, mm	81.5
Compression ratio	9.5
Supply system	Distributed fuel injection with electronic control
Gas distribution mechanism	DOHC 16V
Fuel	Unleaded gasoline A-95
Fuel consumption, l/100 km (city)	7.3
Lubrication system	Combined (spray + under pressure)
Engine oil type	Quality level SG/CC or higher: SAE 5W-30, 10W-40, 15w-40
Engine oil volume	3.75 l
Cooling system	Closed type with forced coolant circulation
Coolant	Based on ethylene glycol
Environmental regulations	EURO - 3

The F16D3 engine was installed on Daewoo Lanos, Nexia, Lacetti cars; ; ZAZ Chance.

Description

All power units that have ever been installed on a Nexia DEU are a classic four-stroke internal combustion engine with 4 cylinders arranged in one row.

The design of the cylinder block is identical. Their lubrication and cooling systems are also built according to the same scheme.

Initially, only the G15MF engine was installed on the Daewoo Nexia, which practically copied the Opel Kadett E engine, but instead of a carburetor, it used a distributed injection system with the simultaneous activation of all nozzles.

The gas distribution mechanism (GRM) was made according to a single-shaft scheme (SOHC 8V) with an overhead camshaft. There was also no catalytic converter and lambda probe.

Subsequently, the number of valves was increased to 16 and a two-shaft timing was used. In addition, the ignition system has been fundamentally changed. The motor after these changes significantly increased power and was labeled A15MF.

In addition, both power units began to be equipped with a lambda probe and a catalytic converter, which allowed them to comply with the requirements of the EURO - 2 standard.

In connection with the introduction of the EURO-3 environmental standard, the Nexia Daewoo engines (G15MF, A15MF) were discontinued and replaced by A15SMS and F16D3 engines:

• A15SMS

It is the fruit of further modernization of the base G15MF engine, in which a number of changes have been made to improve environmental performance:

1. the number of information elements of the engine management system has been increased, including sensors: camshaft position and detonation;
2. instead of the ignition distributor sensor, the ignition module is used;
3. the geometry of the inlet pipeline has been changed;
4. two catalytic converters of exhaust gases are mounted;
5. two oxygen concentration sensors are installed.

• F16D3

An upgraded version of the F14D3 engine with a twin-shaft 16-valve timing belt DOHC 16V overhead and a CVCV (Continuonus Variable Camshaft phasing) phase control system. The engine is also equipped with an electronic exhaust gas recirculation (EGR) control system.

The new b15d2 power unit differs from the rest in a more efficient engine control unit, a redesigned ignition coil, etc. All this, along with the use of an improved timing belt with a chain drive and electronic control of variable valve timing, has significantly increased power and reliability, as well as improved a number of technical motor characteristics.

Maintenance

Maintenance of engines that were installed on Daewoo Nexia is carried out in accordance with the maintenance plan.

True, if the car is operated in harsh driving conditions (dust, off-road, extreme driving, etc.), then it is advisable to carry out maintenance more often.

During scheduled maintenance of the car, it is recommended to monitor the condition of the power unit. At the same time, it is mandatory to carry out:

• replacement of engine oil;
• checking the tightness of all hoses, pipes and pipelines;
• control of the tightening torque of the cylinder head bolts;
• diagnostics of the electronic control system of the power unit;
• replacement of filters (oil and fuel);
• inspection of the air filter and, if necessary, its cleaning or replacement.

An important place in this list is occupied by a responsible (but simple) engine oil change procedure, which can be performed both at a service station and on your own.

Its peculiarity lies in the fact that, for example, changing the Matiz oil is no different from changing the oil of any other Daewoo brand car. It is only important to determine where they are located:

• oil filler neck;
• drainer;
• oil filter.

The volume of oil to be filled into a particular engine is indicated in the technical or reference documentation.

In addition, during maintenance after each:

1. 30 thousand kilometers or 1 time in 3 years, it is necessary to replace the air filter;
2. 40 thousand km or 1 time in 4 years they replace: coolant and brake fluid; replacement of the drive belt and timing rollers.

Note: in the b15d2 engine, the timing chain is changed only if it is overstretched.

Faults

The engines installed on Daewoo Nexia vehicles have a number of characteristic faults (disadvantages). Among them:

FAULTS	THE REASONS	SOLUTIONS
High oil consumption	Oil leak from the engine. Broken or worn piston rings. Dirty or worn oil pump.	Tighten bolts and/or replace sealing elements. Replace defective piston rings. Replace oil pump.
Momentary knocking in the engine immediately after starting.	Malfunction of hydraulic pushers of timing valves. Increased axial clearance of the crankshaft. Increased clearance in the front main bearing.	Check, clean and, if necessary, replace the tappets. Replace shaft bearing. Replace worn parts.
Loud knocking sound on warm engine.	Loose torque converter mounting bolts. Tightened drive belts. Increased clearances in main bearings.	Tighten the bolts. Adjust the tension belts or replace them with serviceable ones. Replace main bearing shells.

Other malfunctions may occur in Nexia engines, which are best fixed in service stations.

tuning

Serious tuning of the engines of the Daewoo Nexia is carried out infrequently. This is largely due to the high complexity of the work on the manufacture and installation of new parts and assemblies. Necessary:

1. Install camshafts with high valve lift.
2. Sand the intake manifold.
3. Boring cylinders for large piston sizes.
4. Install the supercharger (compressor) and controller.
5. Install a large capacity exhaust manifold and straight-through muffler.
6. In addition, we need forged pistons and connecting rods, a lightweight flywheel, a more powerful timing, etc.

After completing the work, it is necessary to reflash the electronic engine control unit. Proper reconfiguration of the electronics in the presence of an installed supercharger will increase the power of the atmospheric motor from 10 to 25%, while increasing the torque by 10 - 20%.

The F16D3 engine was installed on the Nexia after 2008. Nexia with this engine has become very dynamic, because the engine has a volume of 1.6 and 16 valves. In Daewoo, this engine is called DOHC.

Initially, the engine was marked F14D3 with a volume of only 1.4 liters. After modernization at the GM plant, the F16D3 engine and its subsequent modifications were born. In turn, the F14D3 is a continuation of the Opel engine Z16XE (2001), everything is interchangeable with this engine. The next and last modification of the F16D4 engine - phase regulators were added to it and boosted, it has a volume of 125 horsepower compared to 109 horsepower on its predecessor.

Technical characteristics of the F16D3 engine from Daewoo Nexia

The approximate resource of the engine is 220 - 250 thousand kilometers. In fact, this motor is considered a millionaire, it all depends on the maintenance of the motor, as well as on the conditions of its operation.

It is worth noting that if the timing belt breaks on this engine, the valves will bend. During a valve break, collide with the pistons and the higher the crankshaft speed at this moment, the greater the damage.

The engine is installed - Chevrolet Cruze, Daewoo Lanos, Chevrolet Lanos, Daewoo Nexia, Chevrolet Aveo, Chevrolet Lacetti, Daewoo Lacetti, ZAZ Chance, Chevrolet Nexia. The power of 109 horsepower very quickly accelerates such a light car as a Daewoo Nexia.

Typical engine malfunctions F16D3 on Nexia

The F16D3 engine is equipped with an EGR valve - an exhaust gas recirculation system. Exhaust gases re-enter the intake tract and burn out. This was done to reduce toxicity standards, but because of this, the oil loses its properties faster and soot forms on the valves. The engine essentially breathes its own exhaust. For Nexia, we wrote how to turn off the USR valve, but this instruction will help other owners of this engine. Also, this valve quickly clogs itself from low-quality fuel and clogs the engine, so we recommend turning it off.

Also, a typical problem with this engine is oil leakage from under the valve roof (cylinder head cover). We also already wrote how to eliminate oil leakage from under the valve cover on the Nexia.

With a lack of oil, valves and hydraulic lifters begin to click. If you give a load with no oil, then the engine can be sent to the trash.

F16D3 engine tuning

We devoted a whole section about tuning on Nexia. To increase the amount of horsepower, you need to flash the engine, but the firmware gives a maximum of 5-8 hp. to get a significant increase, you need to put a 4-2-1 spider. The new release increases to 125 horsepower.

The simplest and most effective way to improve vehicle dynamics and reduce fuel consumption is to remove the catalyst and change the exhaust. The catalyst and standard exhaust strongly choke the engine and prevent it from working at normal strength. This is the most affordable type of tuning.

The Daewoo Nexia car in Russia at one time gained extraordinary popularity, but these cars can still be constantly seen on the roads of our country.

This brand has long been the best-selling brand in the Russian Federation, and Nexia is still in good demand.

A bit from the history of Daewoo Nexia

The progenitor of the Daewoo Nexia car was the well-known Opel Cadet E, which was produced by a German company from 1984 to 1991. At first, Nexia was produced in Korea under the name Daewoo Racer, and its release continued until 1995. For some time, the SKD assembly of the Nexia was carried out in Krasny Askai, Rostov Region, but in 1998 the production of the car was discontinued.

The main production of Daewoo Nexia was established in Uzbekistan in the city of Asaka, the first cars rolled off the assembly line in 1996. Almost immediately, the car began to be exported to Russia, and in 2008 Nexia underwent a slight restyling:

• new headlights appeared;
• changed bumper;
• became another trunk lid;
• rear lights changed.

There were still very minor external changes, but in general the car remained recognizable and differed from the pre-styling Nexia a little.

The first Uzbek "Nexia" came in two trim levels:

• GL - basic version;
• GLE - luxury option.

The basic equipment was very simple, sometimes it did not even provide for a power steering. In the GLE version, the car was equipped with additional options:

• power windows;
• hydraulic power steering;
• air conditioning;
• fog lights;
• electrical antenna.

At first, the Daewoo Nexia powertrain lineup included one single 1.5-liter gasoline engine. The motor had a power of 75 liters. with., in-line arrangement of four cylinders.

The G15MF engine is 8 valves, one intake and one exhaust valve per cylinder, in many ways it is very similar to the Opel C16NZ internal combustion engine. Despite the apparent resemblance, Opel and Nexia engines have significant differences, and on the G15MF engine:

• a different diameter of the cylinders, respectively, the pistons have a completely different configuration and dimensions;
• another ebb is made on the crankshaft for the oil pump drive;
• the oil pump itself has a different drive configuration;
• in the cylinder head, instead of a plug, a metal fitting is pressed in at the back for the cooling system pipe, in addition, the combustion chambers are slightly different in the cylinder head.

There are still a number of design differences that do not allow parts from the C16NZ engine to be installed on the G15MF engine. In particular, Nexia has its own distributor, and it does not fit from any Opel.

The Daewoo Nexia 1.5 engine has the following characteristics:

• type of fuel system - distributed injection;
• location on the car - transverse;
• volume - 1498 cm³;
• number of valves - 8;
• cylinder diameter - 76.5 mm;
• piston stroke - 81.5 mm;
• diameter of the crankshaft main journals - 55 mm;
• the diameter of the connecting rod journals is 43 mm.

Despite the fact that the Daewoo Nexia 1.5 engine has 8 valves, a car with it can reach a fairly decent speed (up to 175 km / h) and accelerate to 100 kilometers in 12.5 seconds. In urban mode, fuel consumption with the G15MF engine averages 9.3 liters per 100 kilometers, on the highway outside the city - 7 l / 100 km, with dynamic driving, gasoline consumption increases.

The Nexia 8-valve engine is very reliable, and if you take care of it properly (do not overheat, do not overload, change engine oil on time), then the engine can run more than 200 thousand kilometers without major repairs. It should be noted that some car owners did not spare the engine at all:

• they poured the cheapest surrogate oil into it;
• forgot to change the oil on time;
• did not check the oil level in the crankcase.

If you remove the oil filler cap from such a “killed” engine, you can immediately see blackness on the camshaft, which is formed from low-quality oil. Nevertheless, even such motors miraculously "survived", and this indicates how reliable they are.

In 2002, some changes were made to the Daewoo Nexia, although it is difficult to call them restyling. But the most important novelty of this year is the appearance in the line of power units of a new 16-valve A15MF engine with a volume of 1.5 liters and a power of 85 hp. With.

The main difference between this engine and the 8-valve one is a completely different cylinder head, in which two camshafts are installed. There is no longer a distributor in the power unit, the electronic unit controls the ignition. The diameter of the cylinders remained the same, but the pistons changed - four grooves under the valves appeared on the bottom. To be honest, the grooves on the pistons do not play a special role - when the timing belt breaks, the valves bend. The G15MF 8-valve internal combustion engine wins in this regard; a broken timing belt on it does not damage the engine.

As for the crankshaft, it remained the same, the interchangeability of the A15MF and G15MF crankshafts is complete. Also, the changes did not affect the oil pump, engine sump, flywheel and clutch. In connection with the installation of a more advanced ignition system on the Nexia with a 16-valve engine, fuel consumption has slightly decreased:

• in the urban cycle - 9.3 l / 100 km;
• on the highway outside the city - 6.5 l / 100 km.

New engines 2008

In 2008, in addition to external changes in the body, the Daewoo Nexia updated the engine line:

• instead of the obsolete G15MF engine, the A15SMS ICE was installed. This power unit uses a fuel system from Chevrolet Lanos, the engine began to meet Euro-3 environmental standards;
• the 16-valve A15MF 1.5-liter engine was replaced by a new ICE model F16D3, with a volume of 1.6 liters.

The A15SMS motor has become "stronger" than its predecessor, its power has increased to 89 hp. s., but it also has one “fat” minus - due to the fact that the cylinder head of the new engine is installed from Lanos, when the timing belt breaks, now the valves “meet” the pistons.

Since 2008, a new 16-valve F16D3 engine has been installed on the Daewoo Nexia car, which meets the environmental requirements of Euro 3 and 4, first this engine appeared on the Chevrolet Lacetti. Also, the Chevrolet Cruze model was equipped with the F16D3 engine, the Opel X14XE power unit served as the prototype of the motor. Although the volumes of these motors are different, they are structurally and externally very similar to each other. Both engines have:

• timing belt drive;
• hydraulic compensators;
• two camshafts;
• exhaust gas recirculation system.

The F16D3 gasoline engine has the following technical specifications:

• number / arrangement of cylinders - four, in-line;
• volume - 1598 cm³;
• power - 109 hp;
• fuel system - distributed injection;
• compression ratio in the cylinders - 9.5;
• cylinder diameter - 79 mm;
• piston stroke - 81.5 mm.

To reduce the toxicity of exhaust gases, an EGR valve is installed on this engine, but the recirculation system often cokes from Russian gasoline, and many car owners turn off this valve. The F16D3 engine is not just similar to the X14XE, it also adopted all the diseases from the Opel power unit:

• quick failure of the lambda probe (also due to low-quality fuel);
• oil leak from the valve cover;
• problems with a thermostat that opens too soon.

The leak would not cause much trouble if the oil did not flow into the candle wells. Penetrating into the well, the oil gets on the electrodes of the spark plug, and the internal combustion engine starts to triple. But on the Daewoo Nexia 1.6 engine, oil is rarely consumed through piston rings, in this regard the motor is reliable.

Like any other car, Daewoo Nexia needs maintenance, and engine oil needs to be changed according to the established regulations. The frequency of oil changes on Nexia engines is generally the same as on other models of passenger cars - every 10 thousand kilometers. If the operating conditions are difficult (high loads, work in a hot climate), it is recommended to change the oil after 5 thousand km.

The requirements for engine oils on Nexia are standard, there are no special conditions for them. So that the oil does not burn and blackness does not form on the parts inside the engine, it must be of high quality, with good additives. It is not recommended to pour mineral oil into engines; it is better to use “synthetics” or “semi-synthetics”.

For winter engine oil, the viscosity should be lower, according to the SAE classification for frosty winters, it is good to use grades 5W30, 0W30, 5W40, 0W40. On thick engine oil, when starting in frost, intensive wear of engine parts occurs, the motor resource is reduced, so multigrade oil should not be used for internal combustion engines in winter.

It is recommended to fill in almost any oil from well-known world manufacturers, the main thing is that it is not a fake. Often Daewoo Nexia engines use oil from companies:

• Castrol;
• Mobil;
• Chevron

It has long been proven that it is fake oil that is the cause of soot formation, reducing engine life. The secret here is very simple - the fake does not contain those high-quality additives that have the necessary lubricating properties and reduce friction between rubbing parts.

If "synthetics" for the car owner turns out to be too expensive, you can replace it with semi-synthetic oil, no big trouble will happen. But when replacing synthetic oil with "semi-synthetics", it is necessary to thoroughly flush the oil system before pouring new oil into the Daewoo Nexia engine.

Much has never been asked of this car. Nexia bribed with a low price and good reliability. I must say that the first generation of "Ksyusha" (as the people called this car) more or less justified the trust. The car nursed its first 100 thousand, as a rule, without any problems. In mid-2008, the plant presented an updated model - Nexia N150. Now, after almost 3 years, we decided to sum up all the sores and problem areas of the updated model…

Engines

Nexia buyers can choose from two engines. The 1.5-liter eight-valve engine (80 hp) was accompanied by a relatively modern 16-valve engine with a volume of 1.6 liters and a power of 109 hp. Both comply with Euro 3 standards, and do not differ in agility. This is especially true of the 1.5-liter unit.

Motors are oil eaters. However, this largely depends on the operating conditions and driving style. A consumption of 300 g for every thousand km is considered normal for them. Under our operating conditions, it is better not to forget about the oil level in the intervals between scheduled visits to the service. Speaking of maintenance. In 2010, a new maintenance schedule was developed. Previously, the so-called zero maintenance had to be completed after a thousand kilometers, now the service interval has grown to two thousand. Scheduled maintenance visits are prescribed to be made at intervals of 10 thousand kilometers or once a year, and not every six months, as it was before. Violation of the service rules leads to the loss of the warranty, in fact, as with any automaker.

Note that according to the new regulations, the warranty for Nexia is 3 years or 100 thousand kilometers.

Maintenance is spelled out scrupulously and quite voluminously. So, TO-3 (20 thousand kilometers) involves the replacement of oil, air and fuel filters, spark plugs. Together with the original components, a visit to the service will cost about 8 thousand rubles. (work - up to 2 thousand rubles, details - about 6 thousand rubles). Expensive, of course, but under the hood you will be updated with a lot of things.

The timing kit on both engines changes every 40 thousand kilometers (TO-5). On the eight-valve complete with a belt is a tensioner pulley. The design of the timing of a 1.6-liter engine with 16 valves is more complicated. In addition to the belt, it includes an automatic tensioner roller and a support roller.

"Sweating" a 1.5-liter engine - the talk of the town! Oil regularly oozes from under the valve cover gaskets and cylinder head. Replacing gaskets helps at best for a couple of thousand km. One way to eliminate oil "surplus" is to install a valve cover from Chevrolet Lanos. The other is washing the engine at every MOT. The procedure will cost 300 rubles, but under the hood it will always be clean.

Transmission

It was on the Nexia in the new body that the clutch for some reason began to differ in thoughtfulness. To turn on this or that transmission without any problems, you need to wait a 3-second pause. Agree, in urban traffic is not the most pleasant feature.

There was a period when rather thin oil was poured into the gearbox at the factory. It warmed up very quickly, losing viscosity. The first symptom is knocking in the gearbox during a sharp operation of the clutch pedal. Experts recommended not to wait for the second and third symptoms, but simply pour time-tested semi-synthetics into the box.

Today, the plant has corrected itself: they began to pour liquid of the SAEW80W-90 specification into the gearbox, the degree of viscosity being more appropriate for operation in summer conditions. In the “Vehicle Operation Manual”, the manufacturer recommends using a less viscous oil of specification SAEW75W-90 in winter conditions.

As for the frequency of changing the oil in the manual gearbox, it is 120 thousand km. The clutch takes care of about 80 thousand km. About 50-60 thousand km go SHRUS.

electrical equipment

At first, a lot of complaints were caused by the Check Engine light, which suddenly turned on and did not go out, despite any tricks. Let's calm down right away - as a rule, nothing criminal, the reason is a controller glitch. The controller simply "did not see" the engine crankshaft position sensor (error P13360). It could only be cured at the dealer, and often by replacing the controller itself. By the beginning of 2009, the plant coped with the problem. If Check Engine disturbs you today, it is most likely due to low-quality gasoline.

Relays, sensors and other electrical appliances are manufactured in various parts of our planet, from Kaluga and Pskov to India. Alas, at first they could not boast of either quality or maintainability. So, the instrument cluster, made in India, suffered from “hanging” of the arrows. A phantom malfunction sometimes appeared both on the new Nexia and on a car that had run more than tens of thousands of kilometers. This did not change the essence of the matter: it took at least two or three months to wait for the "socket". In 2009, complaints about Indian devices reached critical mass, and at the insistence of the manufacturer, the Indians finally got down to business. As a result, by 2010, cases of "hanging" became isolated.

Chassis and body

Ball bearings and shock absorbers are not very tolerant of road potholes. Active off-road driving will reduce their service life by almost half - somewhere up to 60 thousand kilometers.

The front brake pads run about 60 thousand km, the discs change with every second replacement of the pads. Rear drum pads nurse up to 120 thousand km.

Increasingly, specialists of dealer technical centers are paying attention to the deterioration in the quality of the paintwork. Today, cars with “shagreen leather”, non-paintings and different colors are in the order of things. But this is not so much a problem for Nexia, but for all automakers in this segment.

But the low quality of sealing the joints of body panels, alas, is a feature of Ksyusha. It happened that in heavy rain water seeped into the cabin and trunk. The glass seals also sinned in the same way.

In my opinion...

Editor:

This car is not taken at the behest of the heart, Nexia is often used solely as a means of transportation or delivery. It is clear that the requirements for such a car are purely pragmatic: efficiency, reliability, unpretentiousness. And although at first the N150 model could not boast of reliability, we should give the plant its due - today Ksyusha is confidently on the mend.