The UAZ Patriot is a car with all-wheel drive, the fuel system of which is practically no different from the UAZ Hunter. The injection UAZ Bukhanka is equipped with a similar fuel system, which needs modernization.
Technical points
Under the hood of the Patriot
The fuel system in the above UAZ models consists of the following units:
- fuel tank;
- coarse and fine filters;
- fuel pump;
- air filter.
Diesel representatives of the UAZ Patriot have a fuel injection pump and an injector, while carburetor models have a carburetor. The small volume of standard gas tanks and their inconvenient location are the main reasons for tuning the UAZ Hunter and UAZ Patriot. Before starting this procedure, it is recommended to find out the features of the fuel transfer system.
In gasoline models, when the engine is running and the fuel pump is working, fuel is pumped from the left to the right tank constantly and automatically. This is due to the presence of a jet pump. It consists of 2 tubes. When the engine is turned on, the fuel pump forces fuel into the fuel line, which is located between the right tank and the corresponding engine ramp.
Liquid comes only from the right tank. The left unit contains a fuel level sensor. A tee is installed in the fuel line, due to which excess gasoline that does not enter the ramp is returned under pressure. The fluid velocity is high, which contributes to a sharp drop in pressure in another tube located around the nozzle. Due to the vacuum, gasoline from the left tank automatically flows into the right tank.
This device operates until there is fuel in the left tank or until the right tank is full. After the first container is empty, the operation of the jet pump coincides with the function of a simple fuel drain fitting (draining excess gasoline from the return line from the engine). The UAZ Patriot fuel module is presented in the form of the following units:
- fuel pump;
- jet transfer pump;
- pressure regulator.
Element number 2 is built into the lid. It, together with the last device, is easily detached from the body of the first unit.
Causes of failure
If the plastic mesh is dirty or the pressure regulator ring mesh is clogged, then:
- Fuel pumping may be disrupted.
- There will be an overflow of liquid through the adsorber.
- The car will begin to twitch during sudden acceleration.
Auto mechanics include the following reasons for such problems:
- jammed bins;
- incorrect installation of the jet pump (on UAZ Patriot 2006-2007);
- the pumping and steam hoses are mixed up (this mistake is often made in car repair shops);
- the steam removal and pumping hoses are pinched or clogged with debris.
Another equally important element of the UAZ Patriot fuel module is the tank cap. This part must be airtight, sealed and tightly closed. This is due to the constant pumping of liquid while the fuel pump is running. Due to the full right tank, overflow through a poorly closed lid is possible.
Fuel injection system units
Among the main reasons for problematic pumping between tanks, auto mechanics identify the following:
- Mesh clogged with debris.
- Fine gasoline filter clogged with dirt.
- Clogged pump, hoses, flow regulator, fuel lines.
- Presence of air in hoses or tank fittings.
- Lack of tightness in the right tank or its lid.
- Use of a fuel pump with low performance and pressure (installation of this unit from other cars or used ones, which have lost their service life and do not have the proper technical characteristics).
To get the best result when replacing a UAZ Patriot with a ZMZ-409 Euro-3 engine and a BOSCH fuel module, it is recommended to install BOSCH electric fuel pumps (marking 0 580 454 001). These devices have double productivity (unlike similar units marked 0 580 453 453).
Fuel filter replacement process
The features of the UAZ Patriot fuel system include:
- 2 gas tanks;
- the presence of holes on gas tanks for draining gasoline;
- the presence of 2 filler necks: left and right;
- lack of tap switch;
- supply of fluid to the engine by a fuel pump from the left tank;
- presence of a sensor in the left gas tank;
- blind neck plugs, the purpose of which is to provide a tight seal (evaporation and leakage of gasoline are excluded);
- there is no communication between the left container and the atmosphere;
- the presence of a valve block installed under the hood on the radiator;
- automatic replenishment of the left container from the right due to the forming vacuum;
- main flow from the 2nd element;
- presence of a return line for draining gasoline.
There are several recommendations for operating this UAZ Patriot module. It is necessary to ensure that the plugs are in good condition and that all gaskets are intact. The first parts need to be tightened with effort. The left tank is filled initially. The tire inflation pump is connected to the gas tank valve if the automatic flow of liquid from the right tank to the left is disrupted (or if it is necessary to use the remaining gasoline in the first unit).
To provide power to the engine from the right tank, you will need to disconnect the fuel line hose from the tube of the corresponding sensors. When carrying out the work described above, it is necessary to take into account that the power system in the area between the electric fuel pump and the pressure regulator (if the ignition is on and for several minutes after it is turned off) is under a pressure of 300 kPa. In this case, gasoline can heat up to a high temperature.
It is prohibited to service or repair the power system with the ignition on or after it is turned off. Before you begin, you will need to reduce the pressure and loosen the air release plug installed on the fine fuel filter.
We answer your questions about what parts are suitable for the UAZ Patriot and which cars, what can and should be replaced and what can be modified in the Patriot. We tried to describe in detail the modifications to the UAZ Patriot in this article, described which sensors can be installed and what they can be replaced with.
What kind of clutch can be installed instead of the standard one?
We recommend
a) LUK 324004126 + 124004520
b) clutch for M50 engine 2.0-2.5 liters BMW 3 - BMW 5 90s
c) BMW sachs 3T2305 #1861931033 + #3082147032 (bmw 1251260)
d) BMW sachs 3000 458 001 BMW (3082 147 032, 1862 149 132, 3151 231 031)
What pressure should be in the wheels?
Front 2.1 rear 2.6 (for alloy wheels).
I decided to buy a UAZ Patriot, I would like to know its dimensions, I’m afraid it won’t fit into the garage?
How to deal with vibration when reducing speed from 110 to 100?
It is necessary to replace the propeller shaft with a suspended bearing with a straight propeller shaft without a suspended bearing (catalog number: 3162-10-2201010-00).
What tires can I install without having to redo anything?
The optimal thing is that you can set 245/75 R16 to a maximum of 265/70/R16 (remember that the speedometer readings will not be accurate).
What drives are installed from the factory?
Alloy wheels: 7J x 16CH Talisman ET 35 PCD 5x139.7 DIA 110
Stamped discs: 6 1/2 J x 16H2 Talisman ET 40 PCD 5x139.7 DIA 110
Does a patriot need noise insulation and anticorrosive treatment?
It is imperative to do anti-corrosion treatment (the bottom, sills, engine compartment, doors in some places must be covered with anti-gravel). Noise and vibration insulation of the UAZ PATRIOT SIMBIR car.
In which of the 2 tanks should gasoline be poured, into the right or left?
In both tanks, although the main right tank, if half of the right tank has just been filled into the left one, the gas pump will pump it into the right one until it is full, and will take gasoline from the right one and pump it from the left one. It is necessary to pour gasoline into both, if only because if this is not done, then one of the tanks will simply rust.
Why is the transfer case making noise?
Due to the fact that the teeth in the transfer case have insufficient engagement, this can all be corrected by a normal turner. As a basis for refining the transfer case, you can take the article on the helical transfer case (Processing of gears and other things). , and further . There is a popular opinion that when you replace the clutch on a BMW, the rattling will stop (the rattling has been verified to go away, but not completely).
In which axle can a self-locking differential be installed?
If you are not a high-speed racer, then it is enough to drive in the front; if it gets stuck, you can get there in the rear. We drive on the rear axle most of the time. And self-blocks often jam.
Where could the leak from the right gas tank come from?
Most likely gasoline is leaking from the jet pump (that crap in the shape of the letter T), the jet pump often falls apart or melts.
The tachometer, fuel level and temperature sensor show more than they actually are - and when the engine is turned off, they do not occupy their “extreme left position”.
The procedure is as follows: with the ignition off, press and hold the clock switch button, then turn on the ignition and after 5 - 7 seconds release the button without turning off the ignition. If necessary, repeat the procedure. You can read the letter from the factory >>>.
Is it worth changing spark plugs and high-voltage wires on a new car?
It is worth replacing the spark plugs with NGK No. 2 in engines with EURO 3 NGK No. 11, high-voltage wires with normal ones in silicone braiding (TESLA Magic Car option for the 406 engine, throw out the factory green ones) this will reduce fuel consumption by 2 liters, a proven fact (compared to the installed at the factory).
I ran out of gas, after filling in a new one, the car farts and doesn’t drive.
An air lock has formed, it needs to be expelled and then it will run (although this is strange).
Is your UAZ Patriot glass fogging up and freezing?
Try to remove all the cracks in the heating system, fix the factory jamb in the recirculation of air flows, remove the gap between the wall of the engine compartment and the dashboard (the hole is visible if you look from the bottom up), make additional ventilation of the body.
Air blows and water flows from the doorways; the Zovod seals do not hold well.
The solution is to adjust the doors, or replace the door seals with VAZ ones.
The interior lamps stopped lighting up after opening the doors, and the signaling system is glitching.
It is necessary to clean (unscrew and blow out the HP 70) or replace the door limit switches with new ones.
Who can competently do Chiptuning in Moscow so that the guarantee that chiptuning provides is preserved?
Acceleration improves, air conditioning works correctly (if there is one and if it is connected to the brain), fuel consumption decreases, access to the Lambda sensor improves; it does not fail every 1000 km. For questions about Chiptuning, call and make an appointment at: 8-926-166-77-99 Alexey. About the lambda sensor
What is the best way to buy a UAZ PATRIOT, so that they don’t sell the car without pre-sale preparation, or a test drive car (such things are practiced by AVTOMIR and some other offices)?
There are no problems with this, call us, we will help you buy, we will even take you for a ride to Ulyanovsk and select a fresh device from the factory. Look at everything you can see, check everything you can check and touch (according to the service book). The presence of all floor mats, water in the glass washer barrel (if it’s winter, then winter anti-freeze liquid), 5 liters of gasoline in the right gas tank, work on additional equipment.
What should I look at every day when I get into the car?
UAZ needs constant monitoring and care! The presence of oil, the level of tasol (antifreeze), traces of oil leakage (faucet, front, top engine cover), oil stains on the floor (asphalt) and other small details of the wheel, water in the cabin after rain, especially where it flows, anyhow not to MIKAS.
Where can I buy normal BOSH sensors for UAZ and Ascan (brain tester) at a reasonable price? Please provide analogues.
Knock sensor BOSCH 0 261 231 046
MPB sensor BOSCH 0 280 218 037
Throttle position sensor BOSCH 0 280 122 001
Synchronization sensor BOSCH 0 261 210 113
Phase sensor BOSCH 0 232 103 006
Idle Air Controller BOSCH 0 280 140 545-002
Thermostat THOMSON (together with Japan) at 87
Address: ELCAR, Moscow, Otkrytoe shosse, 48a t 8-499-168-86-25.
How to remove turn signal firing in Patriot?
Push the rubber gasket down one notch. You can replace the switches with Shnivo ones.
How to eliminate fraying of the cable in the doors in the Patriot?
Push the rubber corrugation further into the door behind the adjacent post, or lay a plastic corrugation (for electrical wiring) over the friction point and secure it with electrical tape.
How to fix the rear wiper in a Patriot?
Replace it with the snout, and disassemble the steering wheel cover, take out the switch and bend the contact a little. You can replace the switches with Shnivo ones.
The brake pressure regulator is leaking (in the Patriot).
This spare part is immediately thrown into the trash. In its place is a pressure regulator "Fenom", made in Belarus.
How to remove the nasty Gazelle exhaust sound?
Enough to sharpen the pants.
Strong draft in the cabin
It is necessary to replace the UAZ door seals with double Gazelle seals (necessarily made of soft rubber).
How can you protect your car from theft?
Install an alarm system, multilock (since it will not be possible to install the Garant), do a tricky shutdown of the fuel pump, disable the crankshaft sensor, install turnkey caps on the fuel tanks.
The UAZ Patriot SUV is a combination of a powerful jeep and a beautiful foreign car. This car has significant differences from other types of vehicles, for example, few people know that the presence of two fuel plugs is due to the presence of two fuel tanks. That’s right, the UAZ Patriot SUV is equipped with two fuel tanks, which are designed for storing and transporting fuel. Moreover, the design in the form of two tanks is typical for both SUVs with the ZMZ-409 gasoline engine and the Iveco diesel engine. In this material we will look at the design features of fuel tanks on an SUV, what volume they have, how to replace one of the devices and other subtleties.
The design of the fuel system of the UAZ Patriot SUV has two tanks that are designed for storing and transporting fuel. The UAZ Patriot SUV has decent fuel consumption, so the presence of two tanks is not just an idea of engineers, but a necessity.
Fuel tanks are located directly under the bottom of the SUV on the left and right sides. The total capacity of these products is 76 liters, as stated by the manufacturer, but there is an opinion that it actually holds much more fuel. Filler plugs are located on both sides of the tanks, allowing fuel to be refueled from either side. This pleasant feature is unique to the Russian SUV UAZ Patriot.
The tanks are connected to each other by rubber pipelines. Fuel is supplied to the engine directly from the right tank, and flammable liquid flows from the left to the right. As fuel is consumed, the right tank is filled from the left. The design diagram of the fuel system of the UAZ Patriot SUV is as follows, shown in the photo below.
How is the fuel transfer process carried out? Fuel constantly flows from the left tank to the right through the operation of an ejector-type jet pump. The design of the left device does not have a fuel pump, but only a level sensor. The system works as follows:
- when the car engine is started, the gas pump operates, supplying fuel from the right tank;
- the fuel line design has a special tee located between the right element and the SUV engine;
- from the tee, excess fuel that does not enter the ramp is returned to the right tank, which is ensured by the pressure in the system;
- this liquid, which passes at high speed, causes a sharp drop in pressure in the system, which causes the creation of a vacuum;
- Due to the vacuum, liquid is transferred from the left to the right tank.
This phenomenon occurs only when the engine is running and until the left element is completely empty. Fuel does not overflow even when the right element is full. Thus, you can see that the main tank on the UAZ Patriot SUV is on the right side, and the additional one is on the left. The additional and main tanks have absolutely identical design and capacity.
Tank of regular and increased volume
How to drain gasoline from tanks?
Sometimes there is a pressing need for a small amount of gasoline, either for washing spare parts or parts, or for starting a fire. Draining gasoline from the tank of a UAZ Patriot SUV is not so easy, because as we remember, this is not just a car, but a real work of technology.
To drain gasoline, you will need to unscrew the drain plug and draw the required amount of fuel through it. Gas tanks on SUVs have a curved system of pipelines coming from the filler plug, so inserting the hose through the plug and sucking in gasoline using the known method will not work. It is impossible to drain gasoline from any gas tank, both the right and the left.
There is another way, but it is a little more complicated. To do this, you must first release the pressure in the rail using a valve. After this, remove the hose from the ramp and lower it into a container that needs to be filled with gasoline. Then the ignition is turned on, and the container is observed to fill. When the container is filled to the required amount, you should simply turn off the ignition. In this case, there is no need to start the engine at all, since the fuel pump is already functioning when the ignition is turned on. Using these methods, gasoline is drained from the gas tanks of a UAZ Patriot SUV.
Container sizes
The size of one SUV gas tank or its volume is 38 liters, but in fact, the length of the neck that goes to the filler plug adds volume to the device. In this case, you can replace that you can fill completely empty gas tanks with 43 liters of gasoline or diesel fuel.
Therefore, if we take into account only the volume of the tanks themselves, then it is 38 liters, and in total the system allows you to fill the car with 86 liters. This is a nice addition, since the car needs a spare amount of fuel.
The system has the disadvantage of pumping fuel, which was discussed above. Fuel transfer is a process that ensures continuous replenishment of the right gas tank. But when something bad happens to this very right tank in the form of damage, then such a pumping system will only accelerate the loss of fuel. Therefore, it would not hurt to have a special button on the panel with which you can turn on or off the gasoline pumping function.
Tank cap
The UAZ Patriot SUV has two filler holes, which means there are also two caps. The tank cap is a sealed element that is used to lock the inlet for refueling. Tightness in this matter is important, since leaky locking contributes to the leakage and evaporation of gasoline.
The cover on the Patriot is ordinary and is not equipped with a special lock. In principle, an SUV does not need a lock on the gas tank filler cap, but it will not be superfluous if you are worried about the safety of your car. Therefore, it is recommended to install a gas cap with a lock that can be closed with a key. Thus, you can definitely sleep peacefully and not worry that the craftsmen will still try to drain the gasoline.
Removal and replacement
Over time, the car may experience such a feature as a violation of the integrity of one of the tanks or the need to clean them. To clean or replace products, you will need to remove them. What is the removal of these devices, we will consider further.
Removing gas tanks on a UAZ Patriot SUV is carried out as follows:
- To begin with, the pressure in the power system is reduced.
- To drain all the fuel from the device, you will need to unscrew the drain plug and place a container.
- The next step is to disconnect the block with wires and unscrew the nut securing the pipelines.
- The pipeline is disconnected from the fuel pump and the clamp is loosened.
- The inlet hose, which is connected to the tank, is removed.
- The bolted connections securing the clamps are unscrewed. After loosening, the clamps must be moved to the side and the gas tank must be dismantled.
This technology is suitable for both left and right device removal. Just before removing the left one, you should disconnect the pipelines and wire blocks from it.
If the product needs to be replaced, then after removal, a similar device, only a new one, is installed. Replacing the tank is not particularly difficult and can be completed in 2-3 hours. It is also possible to replace a standard product with a tuned one or a so-called enlarged tank of the Bakor brand. The capacity of this device is 53 liters, but it is important to take into account that the load on the suspension increases. Therefore, you should choose between what is pleasant and what is useful.
Tank protection
But in principle, replacing it with a new Bakor brand gas tank is only confirmed by positive reviews from car owners. Let us summarize here and note that it is important to monitor the integrity of your fuel storage containers, since the slightest impact will provoke the appearance of microcracks. Therefore, it is recommended in this case to install protection for the tanks.
You can check your BMR and if you need to reduce it!
