In detail: do-it-yourself VAZ 21074 injector engine repair from a real master for the site my.housecope.com.
at the top of the support, put grease on the boot, if it can be easily removed (if not, then we don’t touch - you can break it, just go cleanly);
in the bottom, take in grease with a press-grease.
When you move, you get a rumble, by pressing on the grip, it will drop
How to unscrew candles? We tried all 3 sparkling keys. What other ways are there?
GUL-clutch release Candle- normal set of heads
If life has pushed you with an injector 406 engine, then read this article. There are some descriptions of the advantages of this motor, whether it is worth installing HBO on a car with such a motor, what kind of malfunctions are met and the methods of their installation.
You will know: what types of supplies are in your car, where they are found, how to check their operation. And in the end you will receive a few tips on how to replace them.
A person is painfully aware of the car's strips. First of all, because of the cost of replacement. This article will tell you how you need to replace the pump for BAZ 2109. After reading it, you can do it really well, which saves money.
In order to save money, the owners often repair the VAZ 2107 engine with their own hands. The motor of this model has some features. Before repairing without a service station, you must familiarize yourself with the causes and methods of troubleshooting the VAZ 2107 engine.
Photo of the VAZ 2107 engine.
The VAZ 2107 "Classic" is equipped with a four-stroke inline engine with four cylinders. The engine, depending on the modification, can be made with a central mixing injection system (carburetor) or with a distributed injection system (injector). Depending on the modification, it can also develop from 68 to 74 horsepower.
Video (click to play).
Car engine maintenance must be carried out in accordance with the manufacturer's instructions, taking into account the operating conditions.
Lada 2107 is a rear wheel drive car. The connection of the engine with the variable gearbox is made in the longitudinal version. This design can make it difficult to completely dismantle the motor. Almost all of the interior engine compartment is used to house the engine, air filter and auxiliary systems. It also makes repairs difficult.
Dedicated car-tool.
The need to repair the motor can be caused by a number of reasons:
terms of Use;
planned wear of parts;
engine diagnostics;
unplanned breakdowns;
accidents and others.
The car was produced for about forty years. Due to the obsolescence of the design, there may be incompatibilities with a number of tools. In addition, full engine overhauls are carried out exclusively in private repair shops.
This increases the cost of the work so much that it may be easier to buy a new motor. If the breakdown is small and can be eliminated without complicated procedures, or it is possible to carry out partial overhaul, it is better to do everything yourself
The first thing you should pay attention to when there is a need for engine repair is the condition of the oil in the crankcase (color, turbidity and level). Engine oil in the engine lubrication system is the main indicator of the condition of the joints of engine parts.
Cloudy engine oil.
Clouding of the oil indicates the presence of running-in parts, blackening - about possible overheating or breakthrough of the flame from the combustion chamber into the crankcase. A drop in level may indicate leaks or frictional depletion in overtightened mates.
Checking the oil level is carried out on a cold engine when the vehicle is installed on a flat horizontal surface.
It is also necessary to check the level of antifreeze in the expansion tank. If the level drops, it could indicate overheating or a leak in the cooling system. If the level rises, then we can talk about problems with the thermostat - a device that, depending on the temperature of the coolant, regulates the speed of its movement in the cooling system.
Other malfunctions of the VAZ 2107 engine and their characteristic manifestations can be found in special literature, engine repair instructions.
Before proceeding with the overhaul of the VAZ 2107 engine, it is strongly recommended that you familiarize yourself with the special literature in order to better understand the procedures performed.
Upon completion of the repair, the car must be run-in to run-in all parts. Usually the break-in takes place in the first 5,000 kilometers.
Engine prepared for overhaul.
Before the actual disassembly, the oil must be drained from the engine. To do this, warm up the motor to approximately operating temperature and turn it off. If there is a ditch, then the car is driven onto it.
If it is not possible to enter the ditch, it is necessary to place the car on a flat surface.
Place a 10-liter container made of heat-resistant material under the oil drain hole. Unscrew the plug and drain the oil.
Then drain the antifreeze from the cooling system through the drain hole at the bottom of the engine cooling radiator.
IMPORTANT! The oil can reach temperatures of about 100 degrees. If you try to start the car when the oil and antifreeze are drained, the engine will completely fail.
When all working fluids are drained, unscrew all supports and disconnect the flywheel-to-transmission bolted connections. Using a winch, remove the motor from the bonnet and place it on a stand for repair.
Dismantling the engine does not require a special approach: simple unscrewing of the threaded connections.
Photo of the removed cylinder head.
Everything is removed: the cylinder head, electrical components, including the starter and generator, connecting rods, crankshaft, oil pump and so on. As a result, a separately disassembled cylinder block and a crankshaft should remain. Removing the head and all elements is a simple procedure.
It will be difficult when assembling gas distribution and other engine mechanisms, which require precise matching of the position of the working parts. Installing the head will require compliance with timing marks and other mechanisms.
The removed cylinder head and crankshaft together with the purchased pistons are taken to the grinding specialist. The specialist makes all measurements, including all sizes of the crankshaft, for the subsequent boring of the engine. Boring is necessary to compensate for wear on non-replaceable parts. The specialist grinds to the dimensions of the already purchased pistons.
First of all, worn out plain bearings for the crankshaft bearings, piston rings (compression and oil scraper) need to be replaced. We need gaskets (under the block head and others) and oil seals - installing old ones with new working dimensions can lead to the formation of gaps through which oil and antifreeze will leak.
Consumables required for overhaul.
You also need to purchase rollers and a belt for a belt drive. If the drive is chain, you need to check the chain.
The temperature and pressure sensors in the lubrication system need to be replaced.
We need filters (air, oil filter and others), new oil and antifreeze.
The list of what is needed to repair an engine on a VAZ 2107 also includes all consumables and fasteners. For example, sealant or retaining rings. The need for them arises in the course of the repair and cannot be predetermined.
The cylinder head is a critical part of the engine. It contains the timing elements: valves, camshaft, drive gears and others. All parts must be free of visible defects, no noticeable wear, and also not hang out in the guides. In the case of the first repair (overhaul or planned after overhaul), replacing the camshaft may not be necessary.
Before assembly, you need to make sure that the oil channels are clean, since one of the types of engine lubrication begins precisely from the head.
In addition, even the slightest blockage of the passages will melt the bearing shells, gaskets and other heat-sensitive parts.
Disassembled car engine.
The process of assembling an engine on a VAZ 2107 begins with the installation of a lubricated crankshaft on the supports. Care must be taken not to twist the liners. The accuracy is checked by the coincidence of their locks. The axial displacement is compensated for by half rings. As a result, the backlash should be barely felt by the hands.
After installation, the yokes are tightened. Each twisted yoke must be alternated with checking the smoothness of the crankshaft in the bearings.
The next step is to install the pistons in an assembly with rings (compression and oil scraper) and connecting rods. To do this, you need a mandrel, with which the rings are compressed before the piston is seated in the cylinder. After that, the connecting rod journal is aligned with the journal on the crankshaft. The yokes are twisted.
Next is the turn of the installation of the elements of the lubrication system and oil seals. They are pre-lubricated.
The VAZ 2107 injector has a number of advantages, but also several significant disadvantages, which you should find out about in advance. If you have this car model at your disposal, you should familiarize yourself with the maintenance features of its injection system. But first it is necessary to discuss the device of the VAZ fuel system.
The installation of the injector in the VAZ 2107 made it possible to significantly improve the performance of the engine. Changing the type of fuel system increases the amount of energy that is generated during the combustion of gasoline. Compared to a carbureted engine, the fuel injection system is more efficient in the initial stages, but its performance decreases over time. What does it depend on?
VAZ 2107 injector plays the role of a final element in the fuel system of a car. The air mixture, together with a cloud of atomized gasoline, creates an enormous amount of energy. Over time, this spraying can become less effective, the jets of fuel become weak, and all due to poor quality gasoline.
The main reason for malfunctioning injectors is poor fuel. Fuel for a car consists of many chemical components, in addition, various impurities are added to it, which should improve the overall performance of the engine. This factor cannot be ignored, since such gasoline leaves a sludge on the walls of the fuel system. The thinnest channels are in the injectors, and it is these devices that suffer in the first place. VAZ 21074 injector has the same problem. During operation, fuel deposits only accumulate. What needs to be done to stop this?
The injector device is very sensitive to large inclusions in gasoline. If you are using a cheap brand of fuel, be prepared to change your injectors soon. So the first thing to do for your VAZ fuel pump is to change the brand of fuel. The power supply system of the VAZ 2107 should become cleaner, the possibility of plaque formation in the system is still not excluded. Since the flammable liquid in the channels occasionally stagnates, and sometimes even freezes, an early breakdown can be prevented in only one way - by regular cleaning.
Approximately every 35-40 thousand km it is necessary to carry out preventive cleaning work of the fuel system. You need to rinse the channels with your own hands. The performance of the engine will depend on the quality of cleaning. If this procedure is carried out irregularly, then soon you can say goodbye to one nozzle and look for a new one, and then you will have to change the rest of the VAZ fuel pump elements.
In 4-cylinder types of injection engines, there is a different intensity of clogging of the injectors. In the area of cylinders 2 and 3 there is always an elevated temperature, therefore, the accumulation of sediment there occurs faster.
A prophylactic agent in such cases is considered to be a special admixture of polyesteramine. It prevents the accumulation of burns for a long time.
How to understand that an injector needs replacement, check or repair? Even without sensors, you can understand that repair of the elements of the fuel system is required if there are 1 of 2 main signs in models 2107, 21074:
Unstable engine operation. Sometimes it can stall or start poorly.
A far less obvious sign is power loss. This effect is noticeable if you are mainly driving at medium speed, but at high speed it is very noticeable.
The last sign is recorded only by sensors - the pressure inside the system rises.
The reason for such failures is clogging of the nozzles, even diagnostics are not needed. Cleaning helps to restore the engine to its previous performance. If the problem persists after cleaning, it is worth checking the tubes and nozzles for damage or breakdowns. In such cases, it is better not to start the repair, but simply replace the damaged parts with new ones.
Sometimes it is impossible to independently determine where the damage is, and only then diagnostics in service centers will come in handy. A blockage can cause a rather serious breakdown of the VAZ 2107 injector, as well as rupture of channels. The pressure that builds up inside the system can easily render the most fragile parts unusable. Here, with your own hands, you will not be able to correct the situation, even if you have a complete diagram of the car at hand. There is only one conclusion - you need to pay a lot of time and attention to cleaning the injectors and perform it regularly.
