The carburetor in the new “tens” models was replaced by an injector. This has increased the performance of the car, the engine runs more smoothly and stably. But, at the same time, there is a weak link here - the VAZ 2110 electric fuel pump, which creates the necessary pressure on the fuel injectors, supplying gasoline in a strictly dosed manner.
Electric fuel pump VAZ 2110
Although modern AvtoVAZ cars are equipped with fairly high-quality Bosch fuel pumps, they can fail due to our oversight, low fuel level, water getting into the tank, and other reasons.
FAQ - Benzonaos
Hi all!
I changed the fuel pump motor and screen this week, so I decided to try to make a short instruction with a photo on how to replace the fuel pump motor. When the fuel pump goes bad, many people go and buy a new fuel pump assembly, but why pay more when you can just change the fuel pump motor?!
Our price for a fuel pump assembly is 1.6 - 2000 rubles _____Price for a fuel pump motor is 700 rubles
And so the difference turns out to be 1300 rubles, and literally 15 minutes more work! And why pay 1,300 rubles just for a plastic body, float and check valve?!
And so closer to the point:
1) Remove the rear seat, see in the middle under the rear seat a cover that is held on by two screws, unscrew them with a Phillips screwdriver and move it to the side
We see this picture.
2) Remove the chip, two fuel pipes and unscrew the eight nuts with a 10 wrench
3) We take out the fuel pump (when removing the fuel pump, it will need to be tilted towards the right rear door, since there is a float there and there will still be gasoline in it, it will need to be carefully drained so as not to flood the interior =))
4) We remove the retaining ring from the guides (it is not necessary to install the retaining ring; it is made so that when removing the fuel pump, the fuel pump will not come apart on its own =))
5) Remove the chip with the wires from the top inside and simply stretch the fuel pump so that the guides come out of their grooves
6) Next, we pull out the core of the fuel pump and look at this picture (to remove the core, you will need to snap off the grooves around the plastic body)
7) Remove the mesh from this core, pull off this holder from above and pull out the fuel pump motor
8) We remove the pipe on the fuel pump motor, take a new fuel pump motor, coat it with sealant and put the pipe on the new motor (the oak pipes there are difficult to remove; I heated them with a hairdryer and pulled them off)
9) We insert the motor into the core and put on a new mesh (the mesh has no tricks; it can be removed and inserted with little effort)
10) Install the core with the new motor as it was (make sure that all the grooves are latched and in place)
11) We insert the guides into their places, squeeze it and carry it to install it in the car!
I’ll share my limited knowledge regarding independent and quick diagnosis of the fuel pump
(the fuel pump may hum but not pump)
- If your car does not start, first check whether there is gasoline in the fuel rail. To do this, turn on the ignition, open the hood and on the left side of the engine you will see plastic cap, unscrew it, there will be a nipple there and press on it - if gasoline splashes from there, then the fuel pump is somehow pumping.
— If gasoline does not spray from there, then check the fuel pump fuse. It is located to the left of the front passenger’s foot under the panel. Unscrew this plastic cover and you will see three relays and three fuses, our distant one. You can also turn on the fuel pump forcibly; to do this, remove the plastic case from the distant relay and pinch the relay with your fingers
— If the fuse is intact, the motor is buzzing and there is no gasoline in the fuel rail, then remove the back seat, unscrew the cap on the fuel pump, remove the pipe that is closer to the right door, go to the switch and force the fuel pump on, if gasoline is pouring out of the fuel pump, then most likely the fuel pump is intact, if not, then you need to change the fuel pump motor
He described a method of checking without any special tools; it’s not ideal, but it may come in handy somewhere on the road or in the garage if there is nothing
Don’t forget to change your gas filters on time; the life of your gas pump depends on it!)
Source
What happened?
The performance range was from 67.1 to 146.7 l/h - more than double!
The lowest performance was found in an expensive pump costing 3,250 rubles. Let us remind you that we bought the cheapest one for only 900 rubles.
Details are in the final table.
Of all the results obtained, we consider the main ones to be the pressure regulator opening voltage, as well as the pump efficiency - the ratio of performance to power consumption. We recalculated these values into ratings on a five-point scale: more is better. Their arithmetic average allows us to judge the technical perfection of the pump.
The best were the Italian ERA Fuel pump and the Chinese Kortex KPF. It is curious that both were sold as “foreign” ones: the first for Mitsubishi, the second for Mazda.
But the worst in all respects was... Bosch.
The real characteristics of the tested pumps are not proportional to the price tags, so in conclusion we calculated the price/quality ratio, also bringing it to a five-point rating system.
Surprisingly, the leader was not a frankly cheap pump, but... the same Italian EPA. Absolute victory!
The components of an electric fuel pump, which we tried to artificially overheat by screwing a self-tapping screw into the gap between the blades of the impeller and holding it in a braked state under voltage for five whole minutes. The body heated up to 60 °C, smoke appeared, but the motor did not fail - and even started working after the “load” was removed! Having disassembled the fuel pump, we did not find any melted or damaged elements. This proves that it is even difficult to kill an electric fuel pump. This is one of the most reliable units of a modern car.
The components of an electric fuel pump, which we tried to artificially overheat by screwing a self-tapping screw into the gap between the blades of the impeller and holding it in a braked state under voltage for five whole minutes. The body heated up to 60 °C, smoke appeared, but the motor did not fail - and even started working after the “load” was removed! Having disassembled the fuel pump, we did not find any melted or damaged elements. This proves that it is even difficult to kill an electric fuel pump. This is one of the most reliable units of a modern car.
Signs of a malfunctioning fuel pump (gasoline pump)
One of the main signs by which you can safely determine that the fuel pump should be replaced is poor engine draft, in the absence of other visible reasons. Over time, the fuel pump pumps fuel less efficiently, as a result of which the pressure in the system drops, hence the poor engine thrust.
To make sure that the fuel pump is faulty, you should measure the pressure in the fuel system (rail). If the pressure is weak, then the cause is either the fuel pump or the check valve, which is responsible for the pressure in the system.
A faulty fuel pump may make a loud noise, and you will clearly hear the sound of its operation. This may be another sign that characterizes a “dying” pump.
Is it possible to damage the fuel pump?
Yes, you can, the fuel pump is constantly immersed in fuel, if there is very little gasoline in the tank or it runs out, the fuel pump will run “idle”, as a result of which there is a high probability of its failure.
Everything about the fuel pump for the VAZ 2110 - parameters, checking, dismantling, choosing a replacement, installation
The carburetor in the new “tens” models was replaced by an injector.
This has increased the performance of the car, the engine runs more smoothly and stably. But, at the same time, there is a weak link here - the VAZ 2110 electric fuel pump, which creates the necessary pressure on the fuel injectors, supplying gasoline in a strictly dosed manner. Although modern AvtoVAZ cars are equipped with fairly high-quality Bosch fuel pumps, they can fail due to our oversight, low fuel level, water getting into the tank, and other reasons.
Where is the fuel pump located?
Like most fuel-injected cars, the VAZ 2110-12 has a fuel pump located in the tank; you can get to it from the passenger compartment by lifting the rear seat of the car. It is installed in the fuel module, so when replacing the pump you will first need to disassemble the module and remove the old pump.
In order to get the fuel module, you need to lift the rear seat, unscrew the floor hatch, as well as the 8 nuts securing the module and two metal fuel pipes.
How to buy a good quality Bosch fuel pump?
On the market, a Bosch fuel pump costs half as much as mine. I will provide more accurate information, the retail price of a Bosch VAZ 2110 fuel pump on the market or in unscrupulous stores is $10 cheaper than purchasing an original Bosch fuel pump.
I buy it roughly for 300 UAH, from an official supplier and I know that this is the original, and a fake Bosch fuel pump is sold for 220-250 UAH at retail.
The Bosch fuel pump is in a sealed, durable package, the packaging bag is denser than usual, you can feel it. There is purified gasoline inside the package, if you smell it, then the seal is broken, which means there is a chance of corrosion inside the gasoline pump.
Submersible fuel pumps are lubricated and cooled by fuel. Due to low-quality gasoline and additives, internal electrical mechanisms are corroded. When working dry, the brushes overheat and wear out. The service life of the fuel pump is very long.
There were foreign cars that, after more than 25 years, decided to change the fuel pump, only for the reason that it began to pump poorly, such a car was a 1986 Honda Accord 2.0. It was amazing for me to hear when my grandfather, who is also the driver of this car, told me how he tested it.
He says, I take a jar, pour some water, turn it on the battery, I see the stream is weak, and I realized that he is already old. The pump was original, I personally held it in my hands. The pressure created by the fuel pump can reach 6-7 atmospheres; the Bosch fuel pump with the VAZ 2110 operates with this power.
Which fuel pump to choose for replacement
BOSCH fuel pump 580454138 is installed from the factory . Its service life depends on the quality of the fuel used, as well as on operating conditions. It is also worth noting that this pump is suitable for most other cars, including imported ones. The cost of a BOSCH fuel pump at the moment is from 1,700 rubles. Cheaper analogues are also offered on the market:
Any of the above fuel pumps will be suitable as a replacement for the original one, however, not all of them are of the same quality as the original. In addition to the pump itself, you may need a corrugation to replace it, and if the fuel pump mounting ring is damaged, you can order it or purchase it using the following article number:
If you decide to replace the entire fuel module assembly, you can select one of the suggested modules below.
If you decide to change only the fuel pump, we recommend that when replacing it, you immediately carry out a complete inspection of the module - check the check valve and both corrugations, and also, if necessary, replace the fuel grid.
Let's sum it up
Modern cars require high-quality operation of the gas pump and all fuel equipment. If these devices fail, the most unpleasant consequences are possible. You may experience problems with service life, accuracy, and stability if you choose a low-quality equipment option. We have offered our own rating of the TOP 10 manufacturers of gasoline pumps so that you can choose a worthy analogue. Each of the presented manufacturers has its own advantages. Choose the option that suits you in terms of parameters and price.
Do not forget that the selection of a fuel pump should be of the highest quality and correct. Otherwise, you will not be able to get the required service life and rely on the device. The cheapest equipment options will begin to wear out already in the first year of service, and will also initially not show a decent quality of service. Pay attention to reviews from other customers to choose the right pump model for your car. The best option is to buy an original, but this will cost more, and on budget cars it will often not be the best solution even in terms of the service life of the part.
Instructions for replacing the fuel pump
To begin, move the rear seat to the side and fold back the piece of carpet that covers the fuel module hatch.
Next, unscrew the two bolts securing the hatch and remove it.
A fuel module with two tubes will be visible in front of us.
Before unscrewing the pipes, it is necessary to relieve the pressure in the fuel system. To do this, you will need to remove the fuel pump fuse, or turn off the power to the module and start the engine. After the remaining fuel in the system has been used up, the car will stall and you can begin replacing the fuel pump.
Our fuel module can be of different types - quick-release and screw-on, depending on the year of manufacture of the car. If the fuel pipes are on nuts, unscrew them with a 17mm wrench; if they are on quick releases, then simply tighten the clamps and remove them from the module.
Now, using a 7mm wrench or tube, unscrew the 8 bolts securing the fuel module clamp.
We move the fuel pipes to the sides, lift the clamp and carefully, so as not to spill gasoline, pull out the fuel module.
Disconnect the fuel pump plug
Remove the lock shown in the photo
Using a flat screwdriver, unscrew the two bolts
Remove the rubber bushing and the plastic part underneath it
Now you can remove the fuel pump from the module and replace it with a new one.
To install a new fuel pump and perform assembly, you will need to put a new corrugated hose on the pump. To ensure that this hose does not allow air to pass through, it must be heated when it is put on the pump.
Then we reassemble in reverse order.
Similar articles:
Mechanical replacement
If you find problems with the fuel pump, you can try to repair it yourself, or replace it with a new one. In the first case, it is better to buy a repair kit. It includes all the elements of the device that can fail: valves, gaskets, diaphragms and pusher.
If you decide to replace the pump assembly, it is even easier.
After dismantling the faulty device, you need to:
- Install new gaskets and pusher.
- Place the pump in place and secure it with nuts.
- Connect the fuel line hoses and secure them with clamps.
- Press the manual primer lever several times to fill the pump with fuel.
- Start the engine and check its operation.
A new fuel pump is installed on new gaskets
Advantages of injection models
The main function of the pump is to supply fuel to the combustion chamber. It must meet certain requirements. The main criterion is pressure.
The pumps for injection and carburetor engines are different. Thanks to the engine with direct fuel injection, there is no need for preliminary preparation of the combustible mixture. As you know, the carburetor is the weak link. Difficult adjustments, clogged jets, difficult starting in cold weather create inconvenience for owners of classic VAZ brands.
Tens and VAZ-2112 internal combustion engines have significant advantages. Let us note the advantages of injection units:
Unfortunately, the injector has a number of disadvantages. Maintenance and repairs have to be carried out at a service station. It also requires qualified personnel and a computer to determine the malfunction of electronic components. Let us point out other disadvantages:
Design features of fuel pumps for carburetor and injection fuel injection systems
Mechanical fuel pumps, which were installed on the first modifications of the VAZ 2110/2112, have a simple design. It is based on a set of membranes made of special rubberized fabric that is resistant to the chemical action of gasoline. The pump body has two valves: inlet and outlet. The membranes are driven by a rod (pusher). It is driven by a cam mechanism rotated by a camshaft.
Such a mechanical fuel pump can serve for decades until the drive rod wears out or one of the membranes breaks. And even then, if this happens, you can replace these elements in half an hour.
The first modifications of the VAZ 2110 with a carburetor injection system were equipped with mechanical fuel pumps
With an electric fuel pump, things are much more complicated. Its design is based on a small electric motor. It is no different from a regular one, although it works completely immersed in gasoline. The pressure in the system here is created not by a membrane (although there are such pumps), but by a specially shaped impeller mounted on the electric motor shaft.
The service life of the electric fuel pump is 150–200 thousand km. But it can fail much earlier. The main cause of breakdowns when the resource is not used up is additives added to gasoline, as well as various kinds of mechanical impurities. The former destroy the brushes and commutator, while the latter clog the valve mechanisms.
In the injection VAZ 2110/2112, the fuel pump has an electrical design and is part of the submersible fuel module
Master node of the system
The VAZ-2110 fuel pump is equipped with an electric drive. Its body is lowered into the fuel tank. Gasoline is both a pumpable fuel and a coolant. It should be remembered that traveling with an empty tank is fraught with overheating of the VAZ-2110 injector fuel pump.
This electrical device is an independent unit. Accordingly, its operation does not depend on the state of other mechanisms. A necessary condition for rotating the VAZ-2110 fuel pump rotor is maintaining normal voltage on the on-board network.
The voltage comes through the ignition switch. When the key is moved to position 1, the circuit is closed to turn on the drive. The VAZ fuel pump fills the fuel rail. The engine is ready to start.
If symptoms of poor fuel system performance occur, the pump should be checked. We list the signs that make it possible to replace the VAZ-2110 fuel pump:
First of all, a hearing test is performed. After turning the ignition key to position No. 1, there should be a noise under the rear seat. The sound lasts for a couple of seconds. This means that the pump has pumped up the required pressure.
conclusions
Replacing a gasoline pump on a VAZ-2112 with your own hands is not difficult. The total time of the operation is about 1.5 hours, unless force majeure occurs in the form of a break in the power contact group or a breakdown of the pipeline connector.
Good afternoon. Today a VAZ 2110 came to our service center. The car stopped starting. Checked the spark plugs, excellent spark. The owner said that he had dried it out several times before. In this situation, we need to check the functionality of the fuel pump. We removed the fuel filter to see if fuel flows. But it didn't work. In this article we will show you how to remove and replace the fuel pump on a VAZ 2110, 2111, 2112. The instructions are suitable for all models of the tenth family.
| Article: Fuel pump - 2112-1139009 |
| Tools: To replace the fuel pump you will need wrenches and a set of sockets |
| Removing and replacing the fuel pump VAZ 2110, 2111, 2112: |
| First of all, disconnect the terminal from the battery, then tilt the rear seat to the side and unscrew the fuel pump cap. |
| Next, remove the connector from the fuel pump. |
| After this, loosen the clamp on the fuel line. |
| Then unscrew the 2 fuel lines. |
| Next, remove the gaskets on the fuel pump lines. |
| After this, unscrew the 8 bolts on the fuel pump. |
| Then remove the O-ring. |
| After that, pull out the fuel pump with the float. |
| Next, remove the rubber seal. |
| After this, insert the new fuel pump so that the arrow points to the rear of the car. |
| Connect the lines and close the fuel pump cover. |
| So we learned how to change the fuel pump on a VAZ 2110, 2111, 2112 with our own hands. The whole procedure took us about 20 minutes. Sometimes it’s enough just to wash the filter on the fuel pump and it will work like new. After this, the engine started, but not the first time. First he pumped fuel into the line. Try not to drive with an empty tank! Good luck on the roads! |
One of the most important tasks in the fuel system of a car is performed by the fuel pump or, as it is called, the fuel pump. It is he who supplies fuel through the fuel system and a lot depends on him. On injection VAZs, an electric fuel pump is installed, located in the tank. We will tell you in detail how to replace the fuel pump on a VAZ 2110-2112 in this article.
Diagnostic device
To determine the pressure in the main line, a device is needed. It's easy to do it yourself. You need to take a 10 atmosphere pressure gauge, a fitting and an oxygen hose with an internal diameter of 9 mm. We twist all the elements and tighten them with clamps.
The meter is connected to the ramp. To do this, remove the plastic cap from the end of the tube. Next, use a tire cap to unscrew the nipple.
Bleed off excess gasoline. Before draining the flammable liquid, place a rag to prevent gasoline from getting on the generator. Smoking and using electrified tools near the hood is strictly prohibited.
The free end of the hose is pulled onto the ramp. Secure the clamp. After connecting the battery, turn on the ignition. They take readings. The pressure of the VAZ-2110 fuel pump injector will deflect the pressure gauge needle to 3 atm.
After starting the engine, observe the movement of the needle. On working equipment, the pressure will be maintained within 2.8-3.2 units. If no deviations are found, then the VAZ-2110 fuel pump, injector and regulator are working correctly. It is advisable to remember the characteristics of the equipment.
The pump capacity is about 2 liters per second. If problems arise with the fuel supply, the pump must be replaced. Before checking the pump, make sure that the remaining elements are in good working order. The filter or mesh may be clogged. The fuel filter is changed and the mesh is cleaned.
Characteristics of the Bosch VAZ 2110 fuel pump (pressure and performance):
I still don’t understand, Bosch is a good fuel pump, is it worth installing on the VAZ 21099? Who installed it, please share your feedback?
A fuel pump from a VAZ 2110, also known as Bosch, is ideal for a large number of cars and even motorcycles.
what is the performance? liters per hour
Well done! Correctly explained to the idiots))) vodka is haha complete))) The difference in the density of gasoline and alcohol is huge))) Why didn’t he test with water? The pump would have been ruined right away, and there would have been no suffering))) The injection pump in this case is lubricated with gasoline. Air, water - work without lubrication. The gears of the fuel injection pump are second-layer plastic (I won’t say, but plastic??) when dry they melt very quickly. The beginning of the end of this unit has dried out! A gap appears. Wait for him to tell you - we’ve arrived))) Yes, and as for whether you’re a Bosch or not, the author has the complete truth.
They wrote you some water and poured some water instead of vodka, you’re just thinking about booze))))
Is it possible to install it on a BMW E60 2008? The pump on the E60 pumps about 5 bar, will the pump from 2110 work normally?
Even for M50b20 it is not enough
on the Jeep Grand Cherokee 1993, the 5.2 v 8 engine is installed only after 2 years.
I was driving in winter and broke down on the highway. Ford S Max 2007 Kind people suggested the service and delivered it. Since there were no money on the original Ford one, 16,000. They installed the Boshevskiy from a VAZ 2110. In general, I paid 3000, I drive and don’t worry, I’m still trying to install the original but I can’t get around to it. The car drives no worse than the original one. The only problem is when there are 10 liters of fuel left, the dip in the ascent sometimes doesn’t suck.
Removing the pumping unit
Before starting work, you must disconnect the terminal from the battery. This will prevent damage to electrical equipment. In addition, replacing the fuel pump may cause a fire.
Let's prepare tools and materials. To remove the VAZ-2110 fuel pump, you need the following:
The device itself is located under the rear seat cushion. To get to the installation location of the fuel pump 2110, you need to remove the seat. Under the casing we find a hatch. We unscrew the hatch. Disconnect the electrical drive connector.
Using an open-end wrench, unscrew the tips of the fuel pipes. We pull off the pipes. Using a spanner, unscrew the 8 nuts around the perimeter of the clamping ring. Release the flange.
There is a gasket under the pressure ring of the fuel pump 2110. The gasket is removed. It is better to change worn tires.
Then we raise the VAZ fuel pump together with the float. Gasoline will leak from the body. To avoid staining the interior, place a rag. There will be up to 1 liter of gasoline left in the old building. Drain it into the tank.
Assembly is carried out in reverse order. There is an arrow on the top of the cover. It should point towards the trunk. This is the correct pump position.
When replacing, do not forget to remove the float and level sensor.
These spare parts are installed on the new structure.
All operations, including preparation, will take less than an hour. After replacement, perform a test. Start the engine. Finally, you should check the fuel pump, make sure the connections are tight and there are no leaks.
Performance check
Checking its performance will help make sure that the fuel pump has failed. For this you will need:
- screwdriver with Phillips bit;
- a piece of gas-resistant hose (50–80 cm) with a clamp;
- key to 17;
- empty 2 liter plastic bottle;
- a piece of insulated wire;
- stopwatch.
Performance testing is carried out as follows:
- We remove the back seat. We lift the carpet and find the gas tank hatch under it. Unscrew the two screws (diagonally).
- Once you remove the hatch, you will see the top of the fuel module. Using a 17 wrench, unscrew the nut of the outlet fitting. We put a hose on it and secure the connection with a clamp. We lower the other end of the hose into an empty bottle.
- Disconnect the pump power connector. Using a piece of wire, we supply power to the positive contact of the device from the corresponding battery terminal. We connect the negative one to ground.
- We begin counting the time from the moment the pump starts.
A working fuel injection pump for a VAZ 2110/2112 should pump 1.5 liters of fuel in one minute. If this indicator is lower, the pump must be replaced.
Checking the fuel rail pressure
But even the fact that the fuel pump starts pumping when the ignition is turned on does not mean that it is working properly. The main indicator of its operation is the pressure in the system. You can check it using a regular pressure gauge with a measurement limit of 5–7 atmospheres, which is used to measure tire pressure. In addition, you will need a piece of gas-resistant hose with an internal diameter of 9 mm and two clamps of the appropriate size.
The verification procedure is as follows:
For engines with a volume of 1500 cm 3 it should be 2.8–3.2 atmospheres, and for power units with a volume of 1600 cm 3 – 3.6–4 atmospheres. If the device indicators are lower, the pump is unsuitable for further use.
