High fuel consumption on the VAZ 2107 carburetor - reasons

VAZ 2107 fuel consumption per 100 km carburetor

To talk about whether a car consumes a lot of gasoline, you need to know what the consumption should actually be.

Depending on the engine installed on the car, the consumption may be as follows (for more details on the consumption of carburetor cars, see our fuel consumption table for carburetor cars):

The difference is obvious. However, the power of the first engine is 72 hp. , and the second one is 80. That’s why it consumes so much gasoline. However, in the case when there is an increase in consumption above the nominal, it is worth talking about too much fuel consumption.

How to reduce fuel consumption on a VAZ 2101

Without wheel

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  Car fuel consumption sensor

  Read also:  Which spark plugs are best for the VAZ 2107 injector: TOP 10 best spark plug manufacturers

Do your own car repairs and tuning

Setting up your VAZ2101 car system to save fuel

The text of the article describes the development of engine systems for fuel economy

As the financial and economic crisis unfolds, almost every car owner is thinking about how to save a few liters. expensive gasoline. Provided that new car owners are somewhat limited in their ability to reduce fuel

With their own stallions of steel, used car owners can effectively customize a set of vehicle accounting programs to meet minimum gasoline consumption requirements. How to Reduce Fuel Economy on a Chevrolet Niva Since the carburetor is the main link in this chain, it would be wise to write about its adjustment, but such a step has not been mentioned yet, so it will be easy for anyone to find. the right material. Therefore, the features of the variant of other automotive systems will be considered (as it turned out, 2 or more fundamental in the issue of fuel economy).

Let's make this an example of the famous VAZ-2101, since it is one of our favorite "old ladies" on our roads.

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More useful, let's start with a set of ignition accounting programs. For information, its variants play a very important role in the fuel consumption of a car. Thus, if the spark is untimely, in other words, low power, then the engine power is miniature. Fuel consumption on VAZ 2105, 21051 cars. Then after this only gasoline consumption increases. To fix this, they start by stripping the switch contacts without adjusting the gaps. The auto tester is ideal for such purposes. what to put the injector on the vase How to wash the vase 2108-21099. In the standard version, the ignition system is set to “penny”. How to adjust the steering column of a VAZ. VAZ 2101-2107 REPAIR AND VAZ 2101 based on the coupe. This is where the derailleur bearing often has its own life. As a result, the contacts close and do not open in a manner that is not required; the engine often fails. Therefore, in this embodiment, the bearing does not change the contact group. Then move on to checking the spark plugs. How to reduce fuel consumption

The 1975 VAZ-2101 is influenced by many factors. Reasons for the increase in fuel consumption on the VAZ 2106 (1.3, 1.6, 1.5), regulation and decrease in gasoline consumption on the Lada 2106. They need to be cleaned, then check the gaps between the electrodes. The latter can be set to 0.7 mm.

The ignition time is set in accordance with the marking. Then they run the test on the go: on a flat road at a speed of about 50 km/h, they suddenly press the gas pedal “to the floor.” If the advance angle is correct, you should hear small and short knocking sounds. If detonation is severe, the stripper should rotate in the minus direction one division at a time, thereby causing ignition retardation. If there is no detonation at all, the switch returns one division to “plus”, producing pre-ignition. As a result of work on the ignition system, gas consumption should be reduced by approximately 0.5 liters.

after installing SONAR

• What is the fuel consumption per 100 km on a VAZ-2105

Engine power system

Conventionally, the power supply system can be divided into two elements:

1. Air supply;
2. Fuel supply.

Let's consider the first option. If your car consumes too much gasoline, the problem may lie in a dirty air filter. All drivers should know that without oxygen, fuel combustion is impossible. Fuel consumption should be carried out in a ratio of 1 kg of fuel to 15 kg of air. This parameter is not always present, but should have approximate values.

If the air filter is dirty, it will turn out that fuel combustion will be poor, which means the engine efficiency will decrease, which is the reason why the VAZ 2107 carburetor has high fuel consumption, but there are other reasons, which lie in the operation of the carburetor itself .

If it is not set correctly, the Lada will have an air/fuel mixture that is too rich or too lean. In both cases, it consumes a lot of fuel and noticeably loses power. To get rid of the problem, you need to configure the system correctly. If the VAZ 2107, or more precisely, its carburetor, still consumes a lot of gasoline and has difficulty starting, then you should check the cleanliness of the fine and coarse filters.

Fuel consumption VAZ 2107 (injector)

The injection “sevens” were equipped with 3 engine options, and one of them differed only in the degree of compliance with environmental standards: 1.5 l, 1.6 (euro-2) and 1.6 (euro-3). Installing an injector did not significantly reduce fuel consumption. The injection system had a greater impact on power and dynamics. Fuel consumption of a VAZ 2107 (injector) with a 1.6-liter engine is 7.3 and 9.7 l/100 km when driving on the highway and in the city, respectively. This is slightly less than its carburetor counterpart. If we take into account that the injector is more “capricious and finicky” in terms of fuel quality and settings requirements, then the advantage in fuel consumption is completely leveled out. How can you reduce the fuel consumption of a VAZ 2107? All advice can be divided into two groups: real, which bring practical benefits, and dubious, which only benefit sellers of “smart” devices for reducing fuel consumption. First, about the “good”, that is, about the correct and effective methods of saving.

Ignition system

Diagram of a non-contact ignition system: 1 - non-contact sensor; 2 — ignition distributor sensor; 3 — spark plugs; 4 - switch; 5 - ignition coil; 6 — mounting block; 7 - ignition relay; 8 — ignition switch.

If the carburetor consumes gasoline in nominal quantities, then the problem may be hidden in the ignition system (the correct adjustment of which is discussed in the article on adjusting the ignition on the VAZ 2107). The check should begin with a visual assessment of the vehicle's behavior.

Popping noises in the muffler or detonation at low speeds may indicate poor spark plug performance or incorrect timing. Unscrew the spark plugs and check their color.

Black carbon deposits indicate that the ignition system is misfiring, when fuel is supplied but does not ignite. This indicates that the candle is not working. If all the spark plugs are the same color, then the ignition is late and needs to be adjusted.

The white color of all candles indicates a poor air-fuel mixture when the fuel consumption of a VAZ 2107 with engine 2106 or 03 (carburetor) exceeds 10 liters per 100 km. In this mode, there is early ignition, the engine eats a lot of air, but is forced to burn gasoline to gain the required speed.

Official data (l/100 km)

The legendary classic was equipped with four different gasoline engines, as well as one diesel engine. The first petrol unit is 1.2 liters. Its power was 64 horsepower, and a carburetor was responsible for supplying fuel. Fuel consumption per 100 km of this configuration was registered at 7.6 liters.

The next engine was 1.3 liters, the power of which was also 64 horsepower. The carburetor was also responsible for fuel here. There was also a special version with a rotary engine, the peak power of which was as much as 140 hp. Gasoline consumption here varied from 7.6 to 7.9 liters.

The first power plants, where an injector was installed, had a volume of 1.5 liters. The power of this version was 71 horsepower, and the consumption was 8.9 liters. The highest consumption was in the version with the 1.6 liter engine. With a power of only 74 hp, it consumed up to 9.1 liters of fuel. Both a carburetor and an injector could be installed here.

The diesel representative had a volume of 1.5 liters and developed only 50 horsepower. However, its consumption was at 6.1 liters. All power plants were controlled by five-speed manual transmissions.

Driving in neutral gear

Almost all VAZ 2107 cars equipped with a carburetor engine with an economizer have the ability to turn off the fuel supply when releasing gas while in gear, which was not the case with early versions of the Lada. In this connection, there is no need to drive in neutral gear, supposedly to save money.

There are no savings here. When the gearbox is in neutral, the speed drops, and the autonomous idle system comes into play, which, when the throttle is closed, supplies the engine with an additional portion of fuel so that it does not stall. In this mode, the fuel system consumes a lot of gasoline.

Aerodynamics of the car

Many Russian drivers have already noticed that the fifth model has much lower consumption due to its aerodynamic properties. We are talking about a radiator grille that is flush with the hood, and does not stick out, as on the seven. The high “nose” of the grille creates additional air resistance, which leads to excessive fuel consumption. In this case, it is recommended to install the hood and grille from the VAZ 2105.

The second reason is a roof rack that has too much protruding cargo. Tall suitcases, boxes and other items carried on the roof also make it difficult for the vehicle to move, causing the engine to consume much more gas than it should. The best way out of the problem is a trailer that hides behind the car, is lightweight and can hold more cargo than a trunk.

Open windows when driving on the highway also interfere with normal gasoline consumption. If the car is hot, you can use central air ducts, which open at speed and set the flow of cold air, which is much more convenient and economical.

Aggressive driving style

Many car owners push their Lada into too high speeds in order to shift to a higher gear. The classic engine is not designed for this driving style. It is designed for a quiet ride, since the car is not sporty and does not tolerate high speeds.

The optimal shift mode should be in the range from 2500 to 3000 rpm. If you turn the engine up to 3500, then in addition to increased consumption, you can also get a decrease in the resource of the power plant.

Tire pressure

The last reason is one of the most common - low tire pressure. To make it clearer, just lower the wheels of the car and try to push it. Everyone knows that this will be extremely difficult.

The same situation occurs with the engine when it tries to move a car with flat tires. It has to expend more energy, which means it needs more fuel.

Now it’s clear why the VAZ 2107 carburetor has high fuel consumption. The reasons for this phenomenon can be easily eliminated and will not require large expenses. It is enough to monitor the condition of your car.

Proper Fuel Saving Techniques

To ensure that the RT is not too large, it is first necessary to monitor the technical condition of the car. Even the condition of the braking system affects increased fuel consumption - if one of the working cylinders is faulty, the car will begin to slow down, and the driving resistance will increase in this case.

It is important to maintain the required tire pressure - when it decreases, resistance also increases, and accordingly, fuel consumption increases by 2-4%, it all depends on how low the tires are. But it’s also not a good idea to overinflate tires - the car starts to drive harshly, and even on a slippery road, the braking distance increases.

If malfunctions appear in the engine or fuel system, you need to carry out diagnostics to find out the cause of the problem. And adjusting the carburetor and setting up the fuel injection system should be trusted to specialists.

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