VAZ 2110 injector 8 valves accelerates poorly

Good afternoon The 2.4 engine stalls when accelerating, it feels like the ignition is late. Help me please! (Magamed)

Hello, Magamed! There can be many reasons for this, ranging from compression and spent spark plugs to the fuel filter. Of course, the problem may also be late ignition. If you had indicated the make of your car, perhaps our recommendations would have been more accurate.

Why does a car accelerate poorly?

Vehicle performance can be degraded due to many factors.

Below are the main reasons why an engine accelerates poorly:

Incorrect motor operation. This may be due to a decrease in the compression level in one or several cylinders at once. In addition, the problem may be the leakage of additional air into the engine intake tract. Often the dynamics are disrupted when the intake system becomes coked or when the exhaust gas converter breaks down.
Incorrect operation of the power system. If the fuel filter element or injectors are clogged. The fuel supply pipes may also be clogged. In some cases, problems are caused by insufficient fuel pump supply or the use of low-quality gasoline.
Problems with the ignition system. When spark plugs have expired or there is a breakdown in high-voltage wires. A check needs to be done.
If the sensors of the engine control system fail. For example, if one of the regulators breaks down, the ECU begins to function according to an additional backup program. Such a program is launched so that the motorist can get to the service station or garage. At the same time, the economic and power parameters of the motor are significantly reduced.
When the clutch slips, which often occurs as a result of misadjustment or wear. A thorough diagnosis of the mechanism should be carried out.
Insufficient air pressure in the tires. It is necessary to check and, if necessary, bring the pressure level to the required level.
Also, deterioration in dynamics may be due to vehicle overload.
Incorrect operation of the braking system, which may be caused by the wheels braking while driving or incorrect adjustment of the hand brake. There is a diagnostic option. You need to find a smooth road, preferably one where there is no wind during the test.

The point is to carry out a run-down run of the car. Refuel the vehicle; only you should be inside the car. The car accelerates to 50 km/h, after which the neutral gear is engaged and the car drives until it stops on its own. A similar procedure is repeated one more time, only in the opposite direction. You need to measure the car's run-out based on driving in both directions; on average it should be approximately 0.5 km.

Setting the OZ on carburetor engines

The simplest and most effective way is to use a regular 12-volt light bulb.

Algorithm of actions:

Rotate the crankshaft pulley until the marks match (on the cover - this is the central mark) using a special spanner. If it is not there, turn on 4th gear and push the car until the marks match.
From the ignition breaker (distributor), disconnect the thin wire going to the coil and attach a light bulb to it, the second contact of which is connected to ground.
Loosen the nut securing the distributor (usually it is a “13” wrench).
Turn on the ignition, make sure that the lamp is on, and slowly turn the distributor around its axis until it goes out.
Now turn the distributor again until the light flashes, and immediately tighten the distributor fastening nut.

Why does the VAZ-2112 16 valves get stuck when accelerating when hot: reasons

Repeatedly, many drivers were faced with the fact that the 16-valve VAZ-2112 began to become dull during acceleration or a drop in speed was felt. This may be due to various reasons that you need to know how to eliminate.

The video shows the process when a VAZ-2112 was tripping, did not pick up speed well, the check engine light came on periodically, and a solution:

Why is it stupid? Basic faults

Type of VAZ-2112 engine

There are not many reasons for the effect when the 16-valve engine on the VAZ-2112 16 valves stalls. Of course, you will have to tinker a little in order to find the true reason in one case or another, but otherwise there is a direct road to a car service center. For those who have decided to repair their car themselves, this information will be useful.

So, let's look at the main reasons for this effect:

The main reasons are considered, and you can move on to solving these problems.

Methods for solving the problem

To eliminate failure during overclocking, you need to check all the components listed below step by step. This is a considerable amount of work, but the car enthusiast will be able to save a sufficient amount of money, which would have been charged to him at a car service center. Of course, for those who don’t understand the design of a car, that’s the way to go, or ask your friends who will fix the problems for half the price. But, if you follow the instructions, you can figure it out yourself.

Poor quality fuel

Poor quality fuel is a common cause of engine breakdowns

Of course, in our country, low-quality fuel causes many misfortunes and troubles for motorists. It is not possible to check the fuel at a gas station, so everyone is already struggling with the consequences. The only thing that can be done is to carry out regular diagnostics and cleaning of the fuel system.

Fuel system

Injectors on the fuel rail removed from the engine

The first line of engine protection is fuel filters, which sometimes fail and not enough fuel gets into the engine. On the other hand, when completely clogged, the injectors are clogged, which at low speeds give a normal amount of mixture, but if the engine is accelerated, the amount of mixture remains the same and a failure appears at low speeds.

The way out of the situation is to replace the fuel filter, clean or replace the gasoline pump mesh, and diagnose and replace failed injectors. The latter usually go through a cleaning stage, but this does not always help and they have to be replaced.

Throttle valve

Cleaned throttle body

A stuck throttle valve and insufficient air supply can cause the engine to become sluggish when accelerating. This is due to a non-optimal fuel mixture. In this case, the solution to the problem is cleaning.

Fuel quality

Adjusting valves on a VAZ 2110 8 valve injector

The use of high-quality gasoline or diesel fuel is the key to long-term engine life and obtaining maximum power indicators from it. But none of the drivers is completely immune from refueling with low-quality fuel, the use of which threatens not only a significant reduction in power indicators, but also the inability to start the engine. Regular use of low-quality gasoline manifests itself in intensive formation of carbon deposits on the cylinders, pistons, catalyst and exhaust manifold, as well as increased wear of the cylinder-piston group.

VAZ-2112 accelerates poorly 16 valves: poor acceleration dynamics

Poor acceleration of the 16-valve VAZ-2112 is a consequence of a malfunction in the ignition system or fuel supply. It is difficult to eliminate the causes of such a failure, but it is quite possible to do it yourself. To do this, a considerable amount of work will have to be done.

Lost power on the VAZ-2112 - many symptoms and reasons, more details in the video below:

Causes of malfunction

General view of engine 2112

There may be many reasons why the 16-valve VAZ-2112 accelerates poorly, but if such a situation arises, you need to know what they are. Let's consider all the possible ways the problem may arise:

When all the reasons have been considered, you can proceed directly to fixing the problem.

Elimination methods

Before moving directly to methods for eliminating the problem, it is worth noting that you do not need to get into the components of power units if you do not know the design. It is best, in such cases, to contact a car service, where everything will be done quickly and efficiently.

Poor quality fuel

Statistics on low-quality fuel and how it gets to gas stations

The issue of low-quality fuel that enters the car’s fuel system has been repeatedly raised, which can lead to various types of breakdowns. So, poor acceleration can be directly related to the fact that fuel has entered the system and does not detonate well. You can fix the problem by draining the gasoline and cleaning the fuel tank.

Fuel system

Dismantled fuel rail with injectors

If the fuel system is clogged, namely poor operation of the gasoline pump or clogged injectors, this effect may occur.

To eliminate the malfunction, it is necessary to dismantle the elements and clean them thoroughly. If cleaning does not help, you need to identify damage and replace parts. For the fuel pump - replacing the mesh and directly replacing the fuel filter itself, which is no longer able to clean gasoline, but for the injectors - cleaning on a special stand.

Ignition

The reason for poor acceleration may lie in faulty ignition elements. Thus, breakdown of high-voltage wires or failure of spark plugs can become the main problem. To eliminate the effect, it is necessary to check the resistance of the element, as well as visually inspect for insulation damage or cracks. If defects are found, the wires and spark plugs must be replaced. The choice of spark plugs must be approached very carefully.

ECU errors

Troubleshooting ECU errors using a laptop

The electronic control unit is designed to prevent and signal faults, although sometimes it itself can cause the problem. Thus, the accumulation of errors can lead to incorrect interpretation of incoming signals, both incoming and outgoing. Therefore, it is worth connecting to the ECU and looking at the errors that pop up. If necessary, they must be canceled.

Resetting errors using the instrument panel on a VAZ-2112

Clutch

Worn clutch disc

Excessive wear on the clutch disc can cause it to tow. This is what will cause poor overclocking. Adjusting the clutch won't help, only replacing the disc will.

To resolve the problem, you need to replace the disk. The process is labor-intensive and long, so you will have to stock up on patience and tools.

Engine problems

Engines of the VAZ-2112 family are very reliable.

Major repairs are what the owner faces if the engine loses compression. Loss of compression can occur for many reasons, the most common of which is simple wear and tear. A compression test will show the compression ratio and indirectly indicate whether there are reasons in the engine itself.

conclusions

Some car enthusiasts believe that poor acceleration on the 16-valve VAZ-2112 may be associated with poor tire condition. This may include both tread wear and insufficient pressure. According to the letter of recommendation from AvtoVAZ, as well as repair manuals, insufficient tire pressure, if it has not dropped below 1.5 atmospheres, cannot be the cause of poor acceleration, and the fault should be looked for in the engine elements.

Signs of engine tripping

Regardless of the reasons, engine tripping is associated with the presence of various problems, which can be solved after finding out what caused the stoppage of one of the cylinders of the internal combustion engine.

The main signs of engine tripping include

Signs

Auto mechanics identify several reasons why jerking occurs and the engine begins to stall. The main ones are: incorrect ignition timing, faulty spark plugs and installed condenser, broken piston rings, piston and valve burnout, rocker wear, clogged air filter, and others.

The cause of the jerking must be sought in the cylinders

To reduce the search for the cause of engine tripping, it is recommended to determine which cylinders are not working correctly or have stopped functioning. To do this, you will need to remove the high-voltage wire from the spark plugs one by one.

This procedure must be performed carefully, as there is a risk of electric shock. Before performing this work, you will need to place a dielectric base in the form of rubber or wood under your feet.

It is recommended to remove by the wire. Then the engine speed increases to 1500 rpm. The valves are removed from the cylinders one by one. If the sound of the vehicle changes when removed, then the cylinder is working correctly. Otherwise, it must be replaced.

VAZ 2110 | The car accelerates poorly

There are many reasons for the deterioration of dynamics, the main ones can be defined as follows:

1. Engine malfunction - decreased compression in one or more cylinders, changes in valve timing when the camshaft drive belt jumps, additional air is sucked between the carburetor and the combustion chamber in the engine. Coking of the exhaust system.

2. Malfunction of the power system - clogging of the entire system, fuel filters, carburetor. Insufficient fuel pump supply. Incorrect carburetor adjustment (mixture too lean or too rich). Use of low-quality fuel.

3. Malfunction of the ignition system - failure of the spark plug, breakdown of the high-voltage circuit of the system, incorrect setting of the ignition timing.

4. Clutch slippage due to wear or misadjustment.

5. Malfunction of the brake system - braking of one or more wheels while driving, incorrect adjustment of the parking brake.

6. Insufficient air pressure in tires.

7. Vehicle overload.

Full diagnostics of the car should be carried out by highly qualified technicians using special diagnostic equipment, so contact a car service center.

You can do the following work yourself:

1. Check and adjust tire pressure to normal.

What does the manufacturer say about the roar of the engine?

Hyundai automotive power plants are installed on imported cars. The engines are not equipped with anachronistic carburetors, but with electronic fuel injection systems.

The manufacturer has prepared a list of possible malfunctions of injection engines:

Malfunctions occur when the performance characteristics of the fuel mesh filter are reduced.
Reduced technical characteristics of the gasoline pump.
The engine injection nozzles are faulty.
Poor tightness of the lines allows excess air to enter the combustion chambers of the cylinders.
The ECU and ECM sensors are not precise in their actions.
The ignition system was damaged.

These other faults can create problems when accelerating cars. In some cases, the propulsion system growls, thus signaling a problem.

What should you do if your car stalls when accelerating?

Why does a car accelerate poorly?

Owners of used cars often encounter the problem that the car stalls when accelerating. This can be expressed in different ways:

From the very start, pressing the gas pedal to the floor, the driver hardly feels any feedback from his iron horse, the car either picks up speed very slowly or does it jerkily;
The problem may occur when overtaking. Drivers often describe it this way: “when I try to overtake a car, I change lanes, press the gas pedal to the floor, but the car doesn’t move, it feels like someone is holding it by the rear bumper.”

The car does not accelerate

There can be a great many such descriptions, but the reasons for such behavior of the car are often the same.

First of all, this is, of course, the wrong job:

The design of the car’s fuel system (injector or carburetor) is also important.

Carburetor cars

The first step is to disassemble and clean the carburetor itself. In this matter, you will be helped by instructions for repairing and servicing your car, which are very easy to find on the Internet. The carburetor should be disassembled with care so as not to lose small parts: springs, screws, nuts and washers.

All metal parts needed:

Collect in one container, preferably metal or glass;
Fill with cleaner;
Let it sit;
Rinse them with water and wipe with a dry cloth.

The outlets in the carburetor must be cleaned using compressed air or a special aerosol. Do not try to clean these holes with metal tools, as this may cause them to become deformed. After cleaning and drying all parts, the carburetor should be assembled and adjusted using the same repair and maintenance instructions for your car or the almighty Google.

The next thing we check is the fuel system. We need to see if it is clogged:

Gasoline coarse filter;
Fine filter;
Gasoline pump.

If there is visible contamination, the parts need to be cleaned or replaced with new ones.

Next, it is recommended to check the electrical circuit of the car:

Ignition coils;
Spark plug tips;
BB wires and spark plugs at the time of breakdown.

If necessary, replace faulty parts. The candles, of course, can be cleaned, but this will not bring any tangible results. If it does happen, it won't last long.

Correctly set ignition is also of considerable importance. You can configure it yourself (if you know how). If you have never encountered this, you can read literature on this topic or ask your comrades for help, or again, the omnipresent and omniscient Internet will help you.

After carrying out the above steps, the problem should be resolved. If this does not happen, then you should contact professionals.

Injection cars

With this design of the fuel system, there are fewer options for incorrect behavior of the car during acceleration. And special diagnostic tools will help identify problems associated with fuel equipment, and this is a direct route to the nearest service station. You are unlikely to be able to fix the problems yourself.

The main reasons for poor acceleration or jerky acceleration include low fuel pressure in the system, failure of the mass air flow sensor and air sensing sensor. Possible acceleration problems may arise due to a malfunction in the ignition system, which can also be identified using special diagnostic equipment for components.

In most cases, problems with acceleration arise on the road (and this is natural), when it is not possible to quickly get to a car service center. In such cases, it is possible to carry out diagnostics yourself; for this you need to visually inspect and check the reliability of the connection of the wires to the ignition coils. You can also start the car engine and open the hood to listen to the engine running. The clicks of electricity during breakdown should be clearly audible, and in dim lighting you can still see the spark itself.

There is such a malfunction as the failure of one or more engine cylinders. It manifests itself in a noticeable decrease in engine power: the car accelerates poorly and has difficulty negotiating various inclines. This malfunction can be identified visually by inspecting the running engine. Strong engine vibration will be noticeable, the sounds of the exhaust system will change, and the idle speed will begin to change. In addition, fuel consumption will increase significantly. As a result, a decrease in engine power leads to its unstable operation and inadequate behavior during acceleration. There is only one solution - engine repair.

As you can see, in cars with a fuel injection system you can do little on your own, without special equipment, and experiments here are extremely undesirable. If any problems or malfunctions are detected, the surest remedy is to contact specialists.

Let's sum it up

There are a great many reasons for the strange behavior of a car during acceleration, all of them are different in their nature of manifestation and complexity of elimination. They have one thing in common: they are all associated with malfunctions in very important parts and components of your machine, so you should find out the cause of this problem as quickly as possible and eliminate it.

Lost power on the VAZ-2112 - many symptoms and reasons, more details in the video below:

Exhaust system and EGR

A malfunction of the exhaust gas recirculation system, as well as deterioration in the throughput of any elements of the exhaust system, can also affect engine power and speed. Due to the deterioration in the flow of exhaust gases, the pressure in the exhaust system increases, the engine literally begins to “suffocate”, as a result of which it significantly loses power, and in more advanced cases is not able to develop high speeds, or even start at all.

The first thing to check in the exhaust system is the condition of the catalyst or particulate filter. Their function is precisely to filter car exhaust. Therefore, you should not be surprised that they often become clogged. To check the catalyst, you can try unscrewing the spark plug, starting the engine and pressing the gas pedal several times. If there is a sharp increase in speed, the problem is in the catalyst. To learn more about a car catalyst, what it is, signs of failure, methods for checking the converter, as well as other information related to it, follow this link.

Also, one of the reasons why the car does not pick up speed when you press the gas pedal may be a layer of carbon deposits on the walls of the exhaust manifold. This can happen due to excessive oil consumption by the engine. In this case, its remains will end up in the collector and burn out there. Over time, carbon deposits, gradually accumulating, actually reduce the diameter of the pipe, in some cases by up to 3-4 centimeters.

Causes of malfunction

General view of engine 2112

There may be many reasons why the 16-valve VAZ-2112 accelerates poorly, but if such a situation arises, you need to know what they are. Let's consider all the possible ways the problem may arise:

When all the reasons have been considered, you can proceed directly to fixing the problem.

Elimination methods

Before moving directly to methods for eliminating the problem, it is worth noting that you do not need to get into the components of power units if you do not know the design. It is best, in such cases, to contact a car service, where everything will be done quickly and efficiently.

Poor quality fuel

Statistics on low-quality fuel and how it gets to gas stations

of low-quality fuel that gets into the fuel system of a car has been raised more than once So, poor acceleration can be directly related to the fact that fuel has entered the system and does not detonate well. You can fix the problem by draining the gasoline and cleaning the fuel tank.

Fuel system

If the fuel system is clogged, namely poor operation of the gasoline pump or clogged injectors, this effect may occur.

Ignition

The reason for poor acceleration may lie in faulty ignition elements. Thus, breakdown of high-voltage wires or failure of spark plugs can become the main problem. To eliminate the effect, it is necessary to check the resistance of the element, as well as visually inspect for insulation damage or cracks. If defects are found, the wires and spark plugs must be replaced. The choice of spark plugs must be approached very carefully.

ECU errors

Troubleshooting ECU errors using a laptop

Resetting errors using the instrument panel on a VAZ-2112

Clutch

Worn clutch disc

Excessive wear on the clutch disc can cause it to tow. This is what will cause poor overclocking. Adjusting the clutch won't help, only replacing the disc will.

To resolve the problem, you need to replace the disk. The process is labor-intensive and long, so you will have to stock up on patience and tools.

Engine problems

Engines of the VAZ-2112 family are very reliable.

Major repairs are what the owner faces if the engine loses compression. Loss of compression can occur for many reasons, the most common of which is simple wear and tear. A compression test will show the compression ratio and indirectly indicate whether there are reasons in the engine itself.

A car with a carburetor jerks at low speeds

Wiring diagram of VAZ 2114 injector 8 valves with description

To reduce the length of the text, our editors omit standard checks of the transmission, lines and ignition. If all systems are functioning normally, but the jerking continues, reconfiguration and carburetor cleaning are required.

This is important, since a small speck that gets into the nozzle can completely upset the calibration of the unit. The unit is dismantled and wiped clean of dirt.

Next, you need to sequentially disassemble the entire system and thoroughly rinse it from possible debris with clean gasoline. After cleaning, all internal passages and inserts are purged with a compressor, which guarantees 100% cleanliness.

The last step is reassembly and installation on the engine.

VAZ 2109/08/99 and 21074 carburetors are especially sensitive to such “sores”.

conclusions

Determining and eliminating the causes of poor speed of the 16-valve VAZ-2112 engine is quite a difficult matter. It is necessary to go through each node step by step, which may be the cause of the malfunction. Well, if the motorist was unable to diagnose the problem on his own, then it is recommended to contact a car service center, where specialists will quickly determine what the problem is and fix it.

Hello. I have a Lada 2112 1.5 16 valve problem. I was driving from the garden and at the very end of the journey the car stopped responding to the gas pedal (it didn’t pick up speed) (it was idling), after stopping, I turned it off and stood for a while, started it up again and revved it up There are revolutions, I drove for 50 seconds and again it does not react. The next day I tried to replace the fuel filter. Everything seemed to work. But I literally drove for 1-1.5 hours, the car started again and does not respond to gas. Tell me what could be the reason. There are assumptions that this only occurs when the car is hot, 90-97 degrees .The speedometer also suddenly failed and the check light does not light up.