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.
Refinement of products of the domestic automotive industry
The firmware of the Lada
Priora engine when leaving the factory assembly line does not have a sports rigid suspension, which is required for the fastest possible start on sports cars. The suspension configuration affects such a concept as ground clearance (the distance from the surface to the lowest central point of the car), which for cars of this brand is at least 17 cm under the bottom and 13.5 cm under the exhaust system.
To modify the suspension, the Lada Priora can be equipped with shorter and stiffer springs (you can cut the standard ones by one and a half turns, but they will not last long). Next, you will need to replace the hydraulic struts that stabilize the car when it hits an uneven surface. The struts must match the springs. In addition, for sporting events you need a sports stabilizer with a large cross-section and bushings made of hard material, polyurethane, and special suspension arms with silent blocks, also made of polyurethane. The combination of these measures allows us to form a new suspension, which gives more opportunities to quickly accelerate to 100.
The shape of the car itself, which is far from the lines of a racing car, also plays an important role for the Priora when picking up speed. It is improved compared to models of previous years, where the drag coefficient reached 0.31 (in modern cars - 0.28) due to the formation of a sharper angle of inclination of the hood and windshield, and less lagging side mirrors. The wheel arches of the Priora model do not protrude much, the rear and side parts are evenly smoothed. The assembly is good - there are no large gaps, the radiator grille is a closed configuration and small, there are no particular complaints about the unevenness of the bottom. All this taken together allows us to assert that the Priora’s data helps it accelerate to 100 km/h in the minimum time possible with this configuration.
Priora accelerated to 200 km. h.
It is known that air resistance begins to significantly affect the car at a speed of 80 km/h, so in the first ten seconds of driving the car system already begins to withstand these loads.
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.
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.
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 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.
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:
Problems when installing an additional sixth gear
An additional sixth gear will help make the car more obedient.
If you decide to put sixth gear on your Lada Priora yourself in order to accelerate faster to 100 kilometers per hour on the road, then you need to take into account, for example, that in the assembly the gears for 5th and 6th gears on the input shaft will be single whole, additional costs will be required for roller and needle bearings, stabilizer locking rings, retaining rings, studs (possibly M8 size), spacer rings, synchronizer hub for 1-2 gears, etc. In addition to the set of tools usually used for overhauling the Priora gearbox, the car enthusiast You will need a 6-point 12-pointer, a grinder, a locking agent for threaded connections and, perhaps, a drill with a cutter.
To ultimately achieve a faster 0-60 mph time, the car can undergo a number of difficult modifications when installing sixth gear. The Lada Priora gearbox may not allow you to immediately install the fifth gear gear, because there may not be enough space for the needle-shaped bearing (you will have to grind the bearing or spacer ring with a grinder). The bushing may have to be pressed onto the output shaft using a hammer, and the synchronizer hub may be lost.
When installing the sixth gear gear from the secondary shaft on a Lada Priora, you may be faced with the fact that you will have to remove the bearing from the assembly, and when closing the gearbox cover, you may have to grind it down so that it does not touch the raised steel plate. In addition, when we put the gearbox redesigned for “acceleration to 100” back into the car, it may affect the spar, and it will require sawdust or the installation of special engine mounts that make its location lower with the gearbox. Therefore, for a faster start at a traffic light, you need to pay decent money or have high qualifications in order to carry out all the work yourself and without harm to the car.
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.
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.
What makes sports cars start quickly?
The car behaves confidently on the road.
In order to start quickly, the car must be light. For example, Lada Priora, a sports hatchback, has a curb weight of 1088 kg and almost all parts of its body are made of galvanized or stainless steel. In global production, to reduce fuel consumption and increase the speed characteristics of sports cars, bodies are made on the basis of aluminum frames using composite materials and carbon fiber (40% lighter than metal), which allows, for example, the Hennessy Venom GT model to accelerate to 100 km/h. in two point seven seconds.
Of course, such fantastic acceleration occurs on supercars due to the fact that they have an engine of a different order than the Lada Priora. The same “Hennessy Venom” has 1244 horsepower under the hood and a volume of 6.2 liters versus ninety-eight “horses” of the Priora family. That is, the difference is more than 10 times, despite the fact that Venom weighs only 180 kg more and costs 100 times more than a product from the domestic automobile industry.
However, even for cars with the same engine displacement, acceleration to 100 can be achieved in different times. Sometimes even a Lada Priora can run faster than a more powerful model, which “wake up” only when the tachometer (determines the number of revolutions of the rotating parts of the car, its engine) approaches the middle of the scale. And the point here is the different elasticity of the engine, which is expressed in different torque characteristics.
Torque, as we know from school physics, is the product of the force applied to the lever and the length of the lever itself. In the Priora, like in other cars, torque occurs when the mixture of air and fuel, after pressing the gas pedal, burns in the chamber, and the vapors expand and press on the piston. Then the connecting rod mechanism translates the reciprocating movements into revolutions of the crankshaft - this is how rotation appears, realizing torque.
This vector physical quantity can be different at different speeds, and is involved in creating the traction force, which moves the Lada car when the traction overcomes the force of the car’s own gravity, air resistance, etc.
