We independently change the muffler on a Renault Logan car

Replacing the muffler Renault Logan

After a certain period of operation of the Renault Logan, its owners are forced to face a malfunction when the muffler burns out.
Therefore, in most cases, the muffler needs to be replaced or repaired, and the most important thing in this matter is to know how to remove a properly repaired muffler. The exhaust system repair procedure itself is problematic, since it cannot be removed without special tools. The muffler most often begins to malfunction on Renault Logan after the winter period of active driving, when the roads are sprinkled with salt and chemicals. Such elements cause oxidation processes in open areas of metal, of which there are almost 100% in the exhaust system. The publication will lift the curtain on how to carefully and correctly remove the muffler, repair it, and, as a last resort, what to do if you need to replace the muffler on a Renault Logan car.

How to determine whether a muffler is faulty on a Renault Logan

The structure of the exhaust system on Renault Logan cars is exactly the same as on any other economy class vehicles. All components of the system are designed to remove exhaust gases from the exhaust manifold and reduce their noise during the removal process.

In this case, the muffler quickly undergoes corrosion and depressurization, because it is precisely this that bears the main impact of the pulsation of gases and hot flows. The driver must be able to determine the performance of the jammer, since the safety of driving the car depends on this. It is very easy to determine whether a muffler is faulty - even a person who just got behind the wheel of a car yesterday can cope with this task.

The tube is designed to remove all exhaust gases outside the body

Procedure for diagnosing faults

First of all, it is recommended to drive the Renault Logan onto an inspection hole or overpass, or use a lift. Of course, if you have neither one nor the other, you can simply put the car on a jack. The main thing is to ensure your convenience and safety when inspecting the muffler:

When inspecting pipes, special attention must be paid to the condition of the resonator and the main muffler, since they are subject to wear more than other parts

If there is no visible damage to the pipes, then the muffler is in working condition. The first signs of a malfunction that the driver should pay attention to are a loud roar from the exhaust system and unpleasant odors in the cabin. Exhaust gases are colorless and odorless, but due to depressurization of the muffler they acquire a specific aroma that can be felt by humans.

Repair of muffler bracket "Renault Logan"

The characteristic dull knock heard from under the bottom of the Renault Logan while driving indicates only one thing: the muffler mount needs to be replaced. The mechanism hangs under the bottom of the car on two brackets covered with special abrasion-resistant rubber.

Cracked rubber is clearly visible on the Renault Logan bracket

But even such tires can wear out after 100 thousand kilometers.

After 100 thousand kilometers, the brackets on the Renault Logan muffler became completely unusable

After this, the device begins to dangle in the bracket and knock on the bottom of the car. It is not possible to somehow restore worn tires. At least in a garage environment. So there is only one option: buying new rubberized brackets and installing them in place of the old ones.

Bracket replacement sequence

1. At the auto store you need to purchase 2 brackets for the Renault Logan muffler. The best option would be to purchase products from Sasiс (catalog number - 40015–80). The cost of these brackets varies from 580 to 750 rubles.

The best brackets for Renault Logan mufflers are produced by Sasic. The car is installed on an inspection hole or on an overpass. Use a 10-mm open-end wrench to unscrew a pair of mounting bolts on the front bracket. Use the same key to unscrew a pair of bolts on the rear bracket.

The mounting bolts on the Renault Logan muffler bracket are unscrewed with a 10mm wrench

• The brackets are removed, replaced with new ones, and the bolts are screwed into place.

How to determine whether a muffler is faulty on a Renault Logan

The structure of the exhaust system on Renault Logan cars is exactly the same as on any other economy class vehicles. All components of the system are designed to remove exhaust gases from the exhaust manifold and reduce their noise during the removal process.

In this case, the muffler quickly undergoes corrosion and depressurization, because it is precisely this that bears the main impact of the pulsation of gases and hot flows. The driver must be able to determine the performance of the jammer, since the safety of driving the car depends on this. It is very easy to determine whether a muffler is faulty - even a person who just got behind the wheel of a car yesterday can cope with this task.

The tube is designed to remove all exhaust gases outside the body

Procedure for diagnosing faults

First of all, it is recommended to drive the Renault Logan onto an inspection hole or overpass, or use a lift. Of course, if you have neither one nor the other, you can simply put the car on a jack. The main thing is to ensure your convenience and safety when inspecting the muffler:

When inspecting pipes, special attention must be paid to the condition of the resonator and the main muffler, since they are subject to wear more than other parts

If there is no visible damage to the pipes, then the muffler is in working condition. The first signs of a malfunction that the driver should pay attention to are a loud roar from the exhaust system and unpleasant odors in the cabin. Exhaust gases are colorless and odorless, but due to depressurization of the muffler they acquire a specific aroma that can be felt by humans.

Repair of Glushak on Logan

Before repairing, you need to make sure that it is advisable. Sometimes drivers try to save completely rotten mufflers, when welding large areas of burnout or corrosion is not able to restore the functionality of the pipe.

Repairing the bracket

Most often, due to driving on uneven roads, the bracket - the muffler mount - fails . The pipe loses its position under the bottom and begins to knock on the body. Accordingly, the bracket needs to be welded back. In this case, it is necessary to maintain the same dimensions and welding locations as before, because the performance of the muffler will depend on how correctly the bracket is welded.

However, not all drivers have experience working with a welding machine. Therefore, in garage conditions it is easier to repair the bracket in another way. Regardless of whether the fastening has completely fallen off or any of its elements have fallen off, you can cut out the remains of the old bracket with a grinder and put an iron clamp in its place.
It will perfectly perform the functions of the previous fastening, and will cost several times less than welding work. However, it will be necessary to periodically check the condition of the clamp in order to promptly change it to a new one.

Determining the causes of the malfunction

There are several ways to diagnose the failure of the Renault Logan muffler.

Increasing car power

Everyone knows that engine power is directly proportional to torque and crankshaft speed. It can be calculated by multiplying these two components. In this case, how quickly the crankshaft rotates depends on the filling of the cylinder with the fuel-air mixture. As a result, it becomes possible to influence the rotation of the shaft with the help of successful gas distribution. And if the muffler is plugged with something (for example, potatoes), then the pressure here will not decrease, which will make clearing it of gases almost impossible. This, in turn, will increase the pressure in the manifold, so the cylinder cannot be cleaned when the exhaust valve opens.

Therefore, glitches will appear during its operation. In the Renault Logan car, the special design of the muffler ensures that the amount of exhaust gases is well compatible with the content of the fresh mixture entering here. Therefore, the functions of the exhaust system are performed as efficiently as possible.

However, such a device does not increase power, so the amount of horsepower in a Renault Logan car is quite low. In this case, you can perform engine tuning. It will help increase its power. Ideally, the power would have increased slightly. If the muffler were completely removed. However, in this case, the car will become completely unsuitable for driving in accordance with all safety requirements. Thus, the exhaust system affects the operation of the engine, but even if it is in perfect condition, the engine power does not increase.

Muffler selection

When going to the store to buy a new device for the Renault Logan car, you should know: this part is not sold anywhere in its entirety. That is, the car owner will not be able to purchase the main muffler, resonator and exhaust pipe in one set. These parts will have to be purchased separately. It is better if the car owner chooses BOSAL products. Another good option would be ATIHO spare parts. The cost of the products of these companies is almost the same:

• the exhaust pipe costs 1,500 rubles;
• main muffler - 2000 rubles;
• resonator - 1800 rubles.

Replacing elements of the Renault Logan exhaust system

Replacing the middle part of the muffler Middle part of the muffler Replacing the middle part of the Renault Logan muffler is slightly different. Since there are two versions of the exhaust system, we will consider both. Spare parts include additional and main mufflers, as well as a catalytic converter with exhaust pipe.

To connect the parts, you must also purchase one or two special clamps when replacing an additional muffler. To avoid burns, it is recommended to start work after the exhaust system has cooled down.

Choosing a muffler and middle part for Renault Logan

Broken muffler

When choosing a muffler, it is worth considering the quality of the material. This will determine how long it will last, its entire resource, or whether it will quickly burn out. The best option is to install an original factory-made one. But, there are analogues that are in no way inferior in quality to those manufactured at the Renault plant.

The muffler itself

So, let's look at the articles and analogues of the muffler that can be installed in Renault Logan.

Original article

Old and new original muffler

The original catalog number looks like this - 6001549415 . It fits perfectly onto standard mounts and does not require any modifications. Its cost is 9,500 rubles.

Analogs

The second option is to install analogues, the quality of which is also good, but the price is slightly cheaper.

One of the most common replacement options is BOSAL

Middle section of muffler

The middle part of the muffler also has the original catalog number - 6001549412 . The average cost in the Russian Federation is 7,500 rubles.

Analogs

Moreover, this part also has analogs that experts recommend for installation on Renault Logan.

Logan resonator repair in our car services

In some cases, when the damage has not yet acquired the character of catastrophic destruction, repairing the resonator on Logan is possible by welding it.

As we have already said, the most common causes of muffler failure are the burnout of its filter under the influence of hot exhaust gases and mechanical damage (after all, it is located under the bottom of the car). In both cases, the elements of its fastening suffer, both to the exhaust tract itself and to the bottom. The easiest way (and, by the way, more reliable) for repairs is to use a welding machine. The fact that the connection will turn out to be permanent does not matter: after all, when the time comes to replace the unit itself, it will still have to be cut out with a grinder.

Removal and repair

In order to remove the Logan muffler, it is necessary to provide comfortable access to the exhaust manifold system.

1. From the bottom of the car, you need to unscrew the 4 bolts securing the muffler pants to the exhaust manifold.
2. Disconnect the oxygen sensor connector and move it aside.
3. Remove the rubber fasteners along the entire length, and then, together with an assistant, dismantle it.
4. In order to replace a damaged muffler element, it is necessary to fix it properly, and then cut out the damaged area using an angle grinder.
5. Having tried on the new element, weld it in 3 places, then put the entire exhaust system in place and make sure that the work was done correctly.
6. If all the fittings went well, carefully remove the muffler and perform high-quality welding using oxygen welding.

Attention! When choosing spare parts, you should be guided by the quality of workmanship, since original Renault parts last a long time.

1. Install the exhaust system in its place, securing the rubber clamps.
2. Replace the exhaust manifold and manifold gasket and their bolts, then lubricate the bolts and tighten them.

After such repairs, the muffler of your Renault will serve you well for a long time.

Description of design

Exhaust system

: 1 — exhaust manifold; 2 — pressure plate for fastening the exhaust pipe to the exhaust manifold; 3 — exhaust gas catalytic converter; 4 - damper; 5 — additional muffler; 6 — main muffler; 7 — system suspension bracket The exhaust system consists of an exhaust manifold, a receiving pipe with a catalytic exhaust gas converter, an additional and main mufflers and pipes connecting them. All elements of the system, except the exhaust manifold, are welded into a single unit. The exhaust manifold flange is connected by a ball joint to the exhaust pipe flange. A rubber-metal damper is attached to the pipe connecting the catalytic converter and the additional muffler to dampen resonant vibrations of the exhaust system. The exhaust system is suspended from the body on three rubber cushions. Heat shields are installed above the converter, additional and main mufflers and near the fuel tank. A metal gasket is installed between the exhaust manifold and the cylinder head. To seal the hinge joint of the exhaust manifold and the exhaust pipe, a ring made of composite material with a spherical outer surface is placed on the exhaust manifold flange, and an internal spherical surface is made in the exhaust pipe flange. The flange connection is tightened by a pressure plate through two conical springs placed on the exhaust manifold studs. The springs are tightened with nuts screwed onto the studs.

Location of the exhaust system on the vehicle (power unit protection removed for clarity)

: 1 — rubber suspension cushion of the exhaust system; 2 - heat shield

The exhaust manifold is covered with a heat shield...

... and is secured with seven nuts to the cylinder head studs (the heat shield has been removed for clarity)

Connection of the exhaust pipe to the exhaust manifold

: 1 - spring; 2 — pressure plate; 3 - nut

Exhaust manifold with oxygen concentration sensor

: 1 — sealing ring connecting the manifold to the exhaust pipe; 2 — oxygen concentration sensor; 3 — exhaust manifold; 4 — sealing gasket connecting the manifold and cylinder head; 5 — exhaust manifold screen A sensor for oxygen concentration in the exhaust gases (lambda probe) is installed in the lower part of the exhaust manifold. The catalytic converter is designed to reduce emissions of carbon monoxide, nitrogen oxides and unburned hydrocarbons. For normal operation of the converter, the composition of the exhaust gases (in particular, the oxygen content in them) must be within strictly specified limits. This function is performed by the electronic engine control unit (ECU), which determines the amount of fuel supplied depending on the signals from the oxygen concentration sensor. If there are lead compounds in the exhaust gases, the catalytic converter and oxygen concentration sensor quickly fail. Therefore, operating a car on leaded gasoline is strictly prohibited, even for a short time. Also, the cause of failure of the converter may be a faulty ignition system or power supply system. If there is a misfire, unburned fuel enters the converter, burns out and sinteres the catalyst block in it, which can lead to clogging of the exhaust system and engine shutdown (or severe loss of power).

Location of marks on the pipe between the neutralizer and the additional muffler

Location of marks on the pipe between the additional and main mufflers

The pipes of the new unit are connected to the pipes of the exhaust system with a special clamp. Mufflers and the catalytic converter are non-separable units; if they fail, they must be replaced with new ones. Spare parts include a neutralizer with a reception pipe, additional and main mufflers with pipes of a certain length, as well as special clamps for connecting pipes. To replace a separate element of an integral system, marks (cores) are applied in two places on its pipes, along which the pipes can be cut. Maintenance of the exhaust system consists of periodically inspecting it, checking for tightness of connections and the presence of through corrosion, including tightening loose connections and replacing rubber suspension cushions.