Why Cut Catalyst In Machine

Cut the catalyst on the machine. How and why?

A catalyst or catalytic converter is part of a vehicle’s exhaust system. It removes nitrogen oxide and hydrocarbon from waste gases. These elements are hazardous to the environment and human health. The catalyst is structured as follows. The basis is a porous ceramic or metal mass with thin channels. When the device heats up to 300 degrees, these metals absorb oxides from the gas stream.
Every car enthusiast is faced with the question: where to remove the catalyst and how much does it cost to remove the catalyst?
We answer popular questions in our article.

Removal of the catalyst. how?

We will diagnose the exhaust system. Let’s check the sensors, the power plant. Let’s make sure that it is the neutralizer that is faulty. Next, we will cut out a portion of the exhaust system with the catalyst. Let’s cut it open to remove the inner parts. After that, welding work will begin. You can’t just leave the catalyst body without internals. The exhaust system will overheat. The motor will make noise. We will install a flame arrester to avoid these problems.
It is difficult to detect a breakdown on your own. Please contact our service. We will remove your old catalyst for free and offer a democratic repair option.

How to understand that the catalyst is faulty?

The catalyst is destroyed by gases passing around it. The catalyst pieces are bent and positioned perpendicular to the gas flow. Clog the exhaust system. They prevent the free passage of gases. This leads to excessive fuel consumption and increased engine heating. As a result, the power of the power unit decreases.

Here are some reasons:

  • The “Check Engine” light came on. It turns on for any motor errors. In our case, due to uncharacteristic indicators of the sensor or lambda probe. Determine exactly what the cause is in the catalyst can be diagnosed with a scanner.
  • Decreased engine power. With a faulty catalyst, the car jerks and accelerates slowly. The reason is the low throughput of the catalytic converter. This is due to the partial destruction of the honeycomb: they are baked and clog the exhaust passage. Motor lacks air.
  • Rumble under the belly of the car. It is noticeable at high revs, sometimes immediately after starting. The reason is the partial destruction of the ceramic honeycomb structure. Fallen particles hit the catalyst walls under the influence of gas flow and centrifugal forces.
  • Insufficiently strong or even pressure of gases from the muffler. With the neutralizer in good working order, bringing your hand to the exhaust pipe, you feel a faint pulsation. It occurs due to the alternating operation of the exhaust valves. If the flow is even or weakened, then the problem is in the destroyed honeycomb of the catalyst.

Fault detected. Cut out the catalyst or install a new one?

Having decided to remove the catalyst, you need to understand what to do with the lambda probe? After removing it, the sensor will constantly give an error. To bypass the sensor, we make a snag. This is a spacer that separates the sensor from the exhaust gases, as a result, it captures more oxygen. The trick is screwed into place of the sensor, and the device is already installed in it. We are also doing an ECU flashing. As a result, the system will take the indicators as the norm. Such work requires additional knowledge and software.

The list of cars, the catalysts of which we cut out:

Hyundai, Chevrolet, Citroen, Ford, Honda, Kia (KIA), Renault (Renault), Peugeot, Mazda, Skoda, Mitsubishi, Nissan, Opel, Suzuki, Toyota, Volkswagen, Acura, Haval, Lifan (LIFAN), Great Wall. ChangFeng, Datsun, Dodge, Isuzu, Subaru.

Causes and symptoms of malfunction

catalyst, machine

In theory, a catalyst should work forever. Noble metals are not oxidized and are not consumed in catalytic chemical reactions. But the reality looks much worse. Thin devices are powerless against temperature violations and mechanical shock.

Almost all problems are associated with malfunctioning of the power supply systems and engine ignition, as well as with the use of low-quality fuel. All this leads to an increase in the temperature of the neutralizer, melting and chipping of its honeycomb structure, followed by clogging of the free passage of exhaust gases.

In this case, the catalyst is capable of inflicting a terrible retaliatory blow on the engine. Its close location to the exhaust valve area has led to the most dangerous effect. crumbled ceramics can get into the cylinders.

This is not a paradox, the fact is that the impulsive nature of the movement of gases at the outlet leads to a chaotic movement of particles along the collector and their suction into the engine by pressure drops.

The result is known to many minders. scratches and scuffs on surfaces that are completely contraindicated. The engine is sent for overhaul.

A common symptom of a malfunction will be a loss of engine power, its inability to develop high revs. Eventually it will just stop running. This is easy to imagine intuitively, imagining that someone cunningly plugged the exhaust pipe. The result is absolutely identical.

What’s valuable in the device

Unfortunately, there was a lot of value there. In the role of catalysts, noble metals had to be used, which are most suitable for this purpose.

It got to the point that the cheapest of them turned out to be gold, but more often you have to use platinum, palladium and rhodium. Many people know that these elements are much more expensive than gold that everyone understands.

Simultaneously with the use of such expensive components, it was necessary to create a geometrically complex structure that ensures contact of the catalytic substance with the entire volume of the gas released by the cylinders. These are the smallest ceramic or metal honeycombs through which the entire exhaust stream is blown.

As a result, the car acquired a complex, massive and expensive device in the form of a metal body, high-tech filling, and even framed by control sensors on both sides, continuously monitoring its safety and correct operation.

Sustainability is not a gift. And the progress did not stop there, further tightening of the requirements of legislators continues to influence the appearance of additional exhaust purification systems.

Types of catalysts

According to its purpose, the neutralizer can be two- or three-component.

  • In the first case, it performs relatively simple functions of oxidation (afterburning) of carbon monoxide and hydrocarbons to form water and carbon dioxide.
  • In the second, the complex ability of the device to work with nitrogen oxides is added. Especially a lot of them are formed in modern diesel and gasoline engines, due to the increase in efficiency, which designers have to use lean and lean mixtures at the inlet.

Three-component catalysts, namely, these are most often used, in turn, may differ in design, made on the basis of ceramic or metal honeycomb products.

Ceramic ceramics are relatively cheaper, but do not have high mechanical strength and durability, are prone to cracking and destruction, do not tolerate impacts when colliding with obstacles.

Metal structures have sufficient elasticity, so they better hold external and internal shocks. Internal ones can arise during abnormal combustion processes and have a destructive effect on a thin honeycomb filling, where, as already mentioned, such complex substances as platinum, palladium and rhodium are usually applied.

But even the metal does not save from the treacherous ingress of foreign substances from the engine in the form of components of counterfeit working fluids, a too rich mixture or all kinds of silicon compounds from the treacherous ingress of foreign substances from the engine into the thin honeycombs.

The catalysts differ in the way they are installed. Previously, they were located in the form of an exhaust pipe, like mufflers and resonators. But it turned out that so it is very difficult and costly to warm them up to the operating temperature at which catalytic reactions begin.

Therefore, now the catalytic converters are installed directly behind the exhaust manifold, as close as possible to the exit point of the hot exhaust gases. It is no longer necessary to wait long for the device to enter the mode, oxygen sensors become less dirty and fuel consumption for maintaining the temperature is reduced.

How to clean

In cases where the honeycomb is not yet damaged, but the throughput of the neutralizer has already been reduced by resinous deposits, it can be washed.

The best way to do this is to use a fluid commonly used to clean carburetors or fuel injectors. It will only require much more of it.

The catalyst is filled with flushing liquid, after which it is given time to dissolve the contaminants, then it is drained, the insides of the parts are washed with hot water and dried (blown through).

Usually the procedure requires repeated repetition. There are also formulations specially designed for such washes.

Why do you need a catalytic converter in a car?

Most of the exhaust gases are completely neutral and harmless substances. nitrogen, water vapor and carbon dioxide. But it is almost impossible to do only with their presence, this happens only in a perfectly tuned engine operating in a predictable stationary mode.

In all other cases, the engine begins to emit chemically active substances, extremely dangerous for humans, carbon monoxide, hydrocarbons and nitrogen oxides.

Direct destruction of such poisons at a high speed and in the required volume is practically impossible, therefore engineers were forced to resort to catalytic reactions known from chemistry for processing harmful substances into relatively neutral.

A catalyst in chemistry is a reaction component that participates in the process, accelerates it well, but itself is not consumed.

How to check

Symptoms are too common to be difficult to diagnose a clogged catalyst.

Changed exhaust sound, stifled hiss in the exhaust system, sometimes generally an extremely weak reaction of a hand brought to the exhaust pipe cut. Usually, in addition, the engine control light comes on, the ECM will notice abnormal readings of the sensors.

The final diagnosis will be made after removing the catalyst from the vehicle. Baked, sediment-filled and crumbled honeycombs are impossible to miss.

Why do you need a catalyst in a car: signs of malfunction and ways to flush the device

A sharp jump in the level of motorization of society at the end of the twentieth century required a global increase in requirements for the environmental friendliness of internal combustion engines. Harsh legislative measures forced manufacturers to develop and implement complex technical systems for cleaning exhaust gases, the main components of which are electronic fuel injection systems and special units for additional processing of exhaust products. catalytic converters.

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Why is the catalyst cut out on the car?

Such removal has negative consequences in the form of increased environmental pollution.

It is usually performed for two reasons. saving on the purchase of a new part, instead of becoming unusable (the product is expensive for the reasons described above) and the power tuning of the car.

Reducing exhaust resistance will allow the engine to spin more confidently. It is no secret that environmental friendliness and efficiency cannot exist simultaneously. A good catalyst requires a significant amount of additional non-payload fuel to maintain.

Catalytic converter in a car

In simple terms, a catalyst is a device for filtering exhaust gases. But, unlike a conventional filter, the neutralizer purifies the exhaust by means of chemical reactions in which the active substance enters. Note that even the neutralizer cannot cope with one hundred percent cleaning, it is designed only to reduce the content of the following components of exhaust gases:

  • hydrocarbons;
  • nitric oxide;
  • carbon oxides.

It is these gases that are among the greenhouse gases and lead to the most dire consequences. For example, smog near large highways occurs due to the multiple excess of the content of hydrocarbons (soot) in the air. Carbon monoxide and nitrogen monoxide are poisonous gases that give the exhaust a characteristic odor. Inhalation for even a short period of time is fatal.

Each of these three exhaust components is affected by a different type of converter:

Also, in more advanced types of catalytic converters, gold is sprayed onto the surface of the honeycomb through which the exhaust passes. As you can see, these are all expensive precious metals. For this reason, replacing a neutralizer is not a cheap pleasure.

The principle of operation is based on chemical reactions: when molecules of, for example, nitric oxide react with rhodium, nitrogen atoms bind and settle on the plates, and oxygen is released. An oxidation reaction is also carried out. due to a sharp increase in temperature, the exhaust is oxidized, and the harmful elements in it simply burn out and settle on the honeycombs.

Note that for normal operation of the catalytic converter it is required that a constant proportion of oxygen to the fuel suspension be maintained in the fuel-air mixture. Oxygen sensors are installed at the inlet and outlet of the catalytic converter, which analyze the composition of the exhaust gases. If an excess of carbon or nitrogen is registered, a corresponding signal is sent to the on-board computer.

Replacing the catalytic converter

If you do not want to spend that kind of money, instead of a neutralizer, they put a can of a flame arrester and a snag instead of Lambda probes. Of course, the savings will be significant, the engine will work even more dynamically. But the problem is that the level of toxicity will no longer comply with Euro 6, 5, 4. That is, you will not be able to travel abroad in such a car, and soon even to Moscow and other big cities. Therefore, we do not recommend doing this kind of “repair”. A catalyst is a great invention that helps to improve the ecological situation all over the world, and when removing it, remember that both you and your children breathe air, and people’s health depends on its pollution.

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The first and most important thing, why the unfortunate catalyst annoyed many motorists so much is at its cost. And all because expensive platinum is used in the catalyst. That is why few people want to spend huge sums of money to replace the catalyst. As a result, many drivers simply decide to remove the part, and install a flame extinguisher and a special “snag” in its place in the muffler. On the one hand, the move is tricky and even somewhat reasonable (a small increase in power). If only because if you do not do anything with the problematic element at once, then it will get worse further. On the other hand, it’s better not to do this at all.

First, you need to understand a simple truth. a car without a catalyst becomes much “dirtier”. Of course, most people don’t care about ecology. If so, then it is worth considering that without a catalyst, the car will start to smell worse.

Secondly, the installation of “trick” on the lambda probe violates the correct correction of the air-fuel mixture. Incorrect engine operation leads to an increase in fuel consumption, a large amount of carbon deposits forms in the combustion chamber. This, in turn, is fraught with numerous negative consequences not only for the unit itself, but also for other components.

Thirdly, the removal of the catalyst from the exhaust system and the installation of “trick” on some models lead to an increase in engine oil consumption. And this, after all, is an additional cost in the long term. Thus, it is quite obvious that it is better to spend once on a new catalyst than after a while to deal with numerous “side” problems.

If you want to learn even more interesting things about cars, then you should definitely read about what causes the problem with the car. when during acceleration it seems to be “held by the tail”.

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Recommendation “Behind the wheel

There are three options for solving the problem with a failed converter. from good and expensive to simple and cheap.

  • The most correct thing is to replace the failed collector with a new one. But.
  • Fortunately for us, a number of companies produce repair catalytic blocks. It looks like a flame arrester, only inside the cylinder is a full-fledged ceramic base with precious metals sputtering. And also, to the delight of intimidated car owners, the base is not ceramic, but metal. This one will definitely not collapse, turning into dust. Such units are installed instead of the standard converter or inside its body, depending on the car model. The part itself will cost 6000-9000 rubles. With a metal base. the most expensive. Installation work. another 1,500-2,000 rubles.
  • The owners of some models have another option for solving the problem. For example, in almost all Korean cars, in addition to the main catalytic converter, an additional catalytic converter is provided in the exhaust manifold. under the bottom. It is significantly inferior in efficiency to the main neutralizer and will not be able to compensate for its loss. But in its place (under the bottom of the car), you can install a cheap, but full-fledged catalytic converter, for example, from a VAZ-2107 with an injection engine. It will cost a little more than three thousand rubles. For poor car owners, this is salvation. Just keep in mind that the heating rate of the catalytic converter under the bottom will not be the same. And so that the second oxygen sensor does not lie, a flashing of the engine control unit will be required.

The catalytic converter is not the enemy of the car owner. He, as far as possible, preserves clean air for you and me. Therefore, if it is out of order, try to restore work in one of the following ways.

  • The most reliable engines (of those that are still on sale). here.

A sharp jump in the level of motorization of society at the end of the twentieth century required a global increase in requirements for the environmental friendliness of internal combustion engines. Harsh legislative measures forced manufacturers to develop and implement complex technical systems for cleaning exhaust gases, the main components of which are electronic fuel injection systems and special units for additional processing of exhaust products. catalytic converters.

How to check

Symptoms are too common to be difficult to diagnose a clogged catalyst.

Changed exhaust sound, stifled hiss in the exhaust system, sometimes generally an extremely weak reaction of a hand brought to the exhaust pipe cut. Usually, in addition, the engine control light comes on, the ECM will notice abnormal readings of the sensors.

The final diagnosis will be made after removing the catalyst from the vehicle. Baked, sediment-filled and crumbled honeycombs are impossible to miss.

What’s valuable in the device

Unfortunately, there was a lot of value there. In the role of catalysts, noble metals had to be used, which are most suitable for this purpose.

It got to the point that the cheapest of them turned out to be gold, but more often you have to use platinum, palladium and rhodium. Many people know that these elements are much more expensive than gold that everyone understands.

Simultaneously with the use of such expensive components, it was necessary to create a geometrically complex structure that ensures contact of the catalytic substance with the entire volume of the gas released by the cylinders. These are the smallest ceramic or metal honeycombs through which the entire exhaust stream is blown.

As a result, the car acquired a complex, massive and expensive device in the form of a metal body, high-tech filling, and even framed by control sensors on both sides, continuously monitoring its safety and correct operation.

Sustainability is not a gift. And the progress did not stop there, further tightening of the requirements of legislators continues to influence the appearance of additional exhaust purification systems.

Catalytic Converter De-Canning Systems

Why do you need a catalytic converter in a car?

Most of the exhaust gases are completely neutral and harmless substances. nitrogen, water vapor and carbon dioxide. But it is almost impossible to do only with their presence, this happens only in a perfectly tuned engine operating in a predictable stationary mode.

In all other cases, the engine begins to emit chemically active substances, extremely dangerous for humans, carbon monoxide, hydrocarbons and nitrogen oxides.

Direct destruction of such poisons at a high speed and in the required volume is practically impossible, therefore engineers were forced to resort to catalytic reactions known from chemistry for processing harmful substances into relatively neutral.

A catalyst in chemistry is a reaction component that participates in the process, accelerates it well, but itself is not consumed.

Why is it better not to cut out the catalyst in the car, but leave it in its place?

Cars are one of the main sources of air pollution. When fuel is burned, almost the entire periodic table of elements is released into the atmosphere, plus various compounds: nitrogen, water vapor, oxygen, carbon dioxide and oxides, soot, benzopyrene. Residents of megalopolises managed to experience all the “delights” of the harmful effects on nature: headaches, bronchitis, respiratory cancer, respiratory and heart failure. Plants, animals, soil, groundwater suffer.

There is a solution to the problem: to minimize harmful emissions. For this, vehicle manufacturers were obliged to improve the combustion efficiency of the fuel-air mixture, and to install catalytic converters and catalysts in the exhaust system. What is a catalyst, how it works, how to replace it. we will consider these questions in today’s material on the vodi.su portal.

Why is it dangerous to cut a catalyst in a car, but they do it anyway

The practice of removing the catalyst from a vehicle’s exhaust system is widespread and generally adopted by a large number of car owners. However, many of them do not know that this is a rather dangerous operation. in the future it can lead to unexpected problems with the engine.

AutoOboz figured out what motorists are guided by when they cut out the catalyst from the car, what this idea can lead to, and what to do if a buyer of a used car finds such a “surprise” in his “iron horse”.

Why is the catalyst cut out?

Some owners believe that the catalytic converter is a superfluous part in the car, as it “steals” the engine’s power, and therefore prefer to remove it. Others do it out of pragmatism. at some point, the catalyst becomes clogged with products of improper combustion and turns into a plug in the exhaust pipe. Accordingly, because of this, the engine again cannot realize its full power.

To remove the catalyst, the owners turn to specialists. Those, as a rule, cut out the “device” itself, reprogram the electronic unit, deceive the exhaust system sensor and install an imitation of the catalyst as an artificial obstacle to engine exhaust gases.

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Why you shouldn’t cut out the catalyst

It’s worth starting with what the function of this device is. The catalyst is installed to clean the exhaust gases. And here there is a very important point: some power units, mainly of Japanese and American manufacturers, are programmed for optimal operation under conditions of resistance from the catalyst for the free exit of gases from the combustion chamber. If this resistance disappears, the engine may start to consume more oil and throw it out through the muffler (a bright symptom is an abundant amount of dark smoke from the muffler). But, even worse, under such conditions, abrasive wear of pistons and cylinders accelerates. And the snag does not always save here. for the normal functioning of the system it is the catalyst that is needed (real, “live”).

However, a clogged or broken catalyst promises no less problems. Due to the destruction of the structure, particles released from it enter the engine cylinders, where they then damage the walls and rings of the pistons. This, of course, also promises big problems.

If it was found in the purchased car that the old catalyst has been removed, it is advisable to install a new one. At the same time, if the catalytic converter is installed in the car, but at one point it has failed (the on-board computer of the car itself, if any, will report the malfunction), it is necessary to disassemble the cylinder head, clean the combustion chamber and exhaust tract, and do not forget add new oil at the end. This will help prevent unpleasant consequences that a damaged catalyst can cause.

What is a catalyst for?

I already have an article. what it is, I will not repeat it. You need to understand that a catalyst (and, scientifically, a catalytic converter) is needed only in order to clean the car exhaust from harmful emissions and make them less harmful.

In simple words, it cleans harmful gases (and it is heated almost “red hot”) and “almost” harmless CO2 and N2, O2 come out of harmful CO, CH and other compounds. This way we save the environment at least a little.

It is arranged quite simply. it is a thickened pipe, which inside has, as it were, honeycombs, only long and hollow. They are usually made of ceramic elements with a sputtering of precious metals (usually platinum group metals are used. iridium, rhodium, paladium).

It is because of this, that everything depends on the class of the car and its volume.

In order for the gases to turn from toxic to less harmful, the temperature of the catalyst must be about 750 degrees Celsius, otherwise the chemical reaction will not occur. The gases that leave the car engine have a temperature of about 500. 550 degrees Celsius (which is not enough), when they pass through the catalyst, a chemical reaction takes place with the release of heat. thus, heating is just what is needed (750. 900 degrees).

Knocked out the catalyst, it’s bad for the car?

As I wrote from above, this is just an ecology system, and if it does not exist, then the car, on the contrary, will improve its characteristics (power, consumption). To put it simply. initially, the engine does not care about this converter, but it creates an obstacle in the muffler, to overcome which part of the engine’s energy is spent (about this a little below).

But why, on many machines, if this unit is out of order (say, melted, clogged, or crumbled), CHECK ENGINE starts to burn and the car starts to behave abnormally, traction disappears, sometimes a little troit, and it may be corny to start at all.

And here friends everything is simple. If the catalyst is melted or clogged, then the exhaust gases cannot pass through it normally, which means that part of it returns back to the combustion chamber and makes the newly supplied fuel mixture less effective. The motor chokes itself.

If there is no melting, but the “CHECK” caught fire, then it is possible that it simply worn out from the high mileage. In modern cars there are so-called oxygen sensors (lambda umbrellas), one stands in front of the catalyst, the other after and catches the presence of harmful compounds, if their percentage has increased, then the second (or also called the lower “lambda”) gives a signal that the neutralizer is not working ( or does its job not as it should) AND IT SHOULD BE REPLACED. By the way, some cars may not even start (a tribute to the environment).

Thus, by knocking out or removing it, you simply free the exhaust tract of the car from the obstacle in the form of a filter and lower its environmental standard. BUT ONCE AGAIN. THIS DOES NOT AFFECT IN THE RESOURCE OF THE POWER UNIT!

BUT in order for your car to drive normally, you need to “flash” under a reduced environmental class (usually EURO2) or put a snag. Otherwise, the program in the ECU will not allow you to drive normally.

Removal of the catalyst. Pros and cons, consumption, firmware. we reveal all the secrets

Often on my blog (and on the channel), there are a lot of questions about the catalyst, and some readers still have many misconceptions in their heads. One of them (for example). if you remove this part of the muffler, then it is VERY bad for the car, it will literally stand up and refuse to drive! I decided to answer all the questions at once, today we will say:. is it worth deleting it or not (what are the pros and cons of such manipulation), what will be the consumption after cutting, whether it is necessary to flash the ECU (and what does it threaten), well, a couple words about “snag”. In general, it will be interesting, as usual the video version at the end.

ARTICLES

  • What is a catalyst for?
  • Knocked out the catalyst, it’s bad for the car?
  • Firmware for EURO2 and snag. what does it mean?
  • Fuel consumption
  • Pros and cons of removal
  • VIDEO VERSION

At the very beginning, I would like to say. that this unit IS NOT SOMETHING IMPORTANT for the car. Yes, “a heap of stones” will fly at me now, they say. what are you talking about, but what about ECOLOGY? But if we discard all the exclamations of “green”, then the car without a catalyst will work BETTER, the CONSUMPTION will be lower, well, the POWER will grow a little.

Firmware for EURO2 and snag. what does it mean?

As I wrote above, the second oxygen sensor (lower lambda) monitors harmful emissions. Their number is now strictly regulated by European standards, which are called “EURO”, I will not talk about EURO “0-1” now, we are interested in the second generation.

So what is EURO2. It was introduced a long time ago, namely in 1996. At that time, the cars received an innovative system, namely a catalyst. As we all know, over time it can get clogged, and the fuel then was not the same as it is now, there was a lot of sulfur in it, which contributed to the clogging of honeycombs much faster, and as you and I know, the car began to choke itself. Then the engineers installed an oxygen sensor, it was only one, and it was needed to capture CO2 in the chamber in front of the catalytic converter.

If the CO2 level increased, this indirectly indicated that the catalyst was clogged (that is, the effect of back pressure is manifested), the sensor sent this information to the ECU and the ignition was corrected, namely, a decrease in the supply of the fuel mixture. Thus, the power dropped a lot, the car did not run and the owner “willy-nilly” had to go to the service station and change this spare part.

BUT as you and I know the price tag, to put it mildly. HIGH, so many owners simply removed these cells and the POWER WAS RESTORED!

But how? YES everything is simple, the level of CO2 in the chamber in front of the neutralizer dropped a lot, the oxygen sensor recorded it (that everything was in order) and the car was going briskly and not forcedly. It suited everyone, BUT ONLY NOT ECOLOGISTS! Therefore, they introduced the EURO3 standard (now the EURO5 standard already exists). What has changed, but just a second oxygen sensor (lower lambda) appeared behind the catalyst. The principle of operation here is this. the first lambda (in front of the filter) fixes the level of harmful substances, the second (after it) should fix the level much lower, because the harmful substances have decomposed.

If you remove the honeycomb of the catalyst, then both sensors will record the same values ​​(the “second” feeds information to the ECU), thus. CHECK ENGINE will light up, the power will drop, the car will not drive. Now this does not solve the problem.

What is done by the firmware under EURO2? The firmware in the ECU is changed, instead of the EURO3.4 standards, the EURO2 standards are set. The essence of all these actions is trivial. we just turn off the second lower lambda (only one upper lambda remains), the car starts to drive as expected, without understating the power.

But such tampering with the firmware is not entirely good. The thing is that they are produced not by the manufacturers themselves, but by “craftsmen”, okay, that the second “lambda” is simply turned off, that is, just an adjustment of the readings. Or maybe this programmer wants to put some incomprehensible algorithms in the ECU, the motor will definitely not benefit from this. You have to be very careful here.

Therefore, we found a second way out, and in my opinion, it is more correct. the installation of a snag. What is a snag. in fact, it is a “spacer” in front of the second oxygen sensor, it kind of pushes it a greater distance from the exhaust gases, it fixes more oxygen and starts to work normally.

Now there are several options for trickery:

  • Empty. It’s just a tube with a very thin hole at the end (the part that is screwed into the muffler), on the other side the oxygen sensor is screwed in. A limited amount of harmful substances from the exhaust passes through it, there is no excess and therefore CHECK does not burn.
  • With mini catalyst inside. That is, right in the “spacer” there are like mini honeycombs, which also clean the exhaust just to fix the normal values.
  • Corner. These are both views described above, only they are made at an angle of 90 degrees, they are needed for difficult places.

Automated Cutting Machine Cutting Polyester Film

The advantages of blende are that you don‘t need to go into the ECU and change the standard firmware, as well).

Fuel consumption

After you have removed this filter, many are tormented by the question of fuel consumption. will it grow or not? Of course. he will fall (so I think), whoever says what. Let’s think logically. if there is this filter element, it represents an obstacle that must be overcome by the exhaust gases, and accordingly the engine will spend more effort to push them through (the flow rate increases slightly). If this element is NOT there, then the “development” will be much easier. fuel is saved.

Of course, one should not expect any global savings, usually this is about 3% (maximum), but it is worth noting that the consumption will drop slightly.

Pros and cons of removal

I have prepared a small plate with the pros and cons of what will happen if you remove the catalyst

MINUSES PROS
Increase in harmful substances in the exhaust, decrease in the environmental component There is no need to buy a new catalyst, because it is very expensive.
Exhaust smell, becomes much more toxic, sometimes this exhaust enters the car (smells unpleasant) Slight increase in power (really small in the level of error, about 3%)
Exhaust sound. After knocking out the catalyst honeycomb, it is advisable to install a flame arrester otherwise there will be a ringing sound from an empty “can” (especially at high speeds) You can install a 4-2-1 or 4-1 spider instead of an empty can, plus more power (which is said out of the blue)
You need to install either a snag or a new firmware for EURO2 Reduced fuel consumption (also about 3%)
Increasing the resource of the power unit, because ceramic dust can get into the combustion chambers and wear it out prematurely
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As you can see, there are a little more advantages, the most significant is the price of all this alteration (it will be removed at times, if not dozens of times. cheaper).

Now the video version, watching.

In conclusion, I would like to say to remove the catalyst. IT IS AT ALL WRONG from the ECOLOGY point of view. After all, our planet is already polluted, and thus you make it even dirtier.!

I finish here, I think this material will help you make the right choice. Sincerely your AUTOBLOGGER.

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You should not count on a long service life of the product if you use a low quality catalyst in a car or a fake unit. If you install a non-original spare part, there is a risk that the diameter of the cells will be insufficient. As a result, the catalytic converter will immediately clog up and fail. Usually this can be observed on American-made cars. After all, the fuel used in America is of much higher quality. Therefore, there will be less combustion products, for this reason, catalysts in American cars are made with small honeycombs.

The neutralizer can become clogged with combustion waste. This usually happens when the engine starts to consume too much oil. Indeed, during its combustion, corrosive black smoke is formed. As a result, the neutralizer suffers the detrimental effect of not only combustion waste, but also oil.

Neutralizers are divided into types depending on the material from which the cartridge is made. There are such types of them:

Ceramic

This model has a honeycomb-like structure. The neutralizer element, made of ceramic, is protected by a platinum-iridium alloy. What are the disadvantages of a ceramic unit? Many car owners believe that such a device is too fragile. For example, the honeycomb will deteriorate if a neutralizer impact occurs while driving. In addition, if you drive a heated car through a puddle, water droplets will fall on the red-hot neutralizer, and it will become unusable. Ceramic dust accumulates inside the device. It penetrates not only into the combustion chamber, but sometimes also into the engine cylinders.

The main advantage of a neutralizer made of ceramics is its budget.

Metallic

The design of such devices is quite robust and reliable. The metal neutralizer is not afraid of mechanical stress. Made of metal, spiral-shaped honeycombs are more resilient. But even such a reliable metal unit has its drawbacks:

  • Do not use low quality or leaded fuel.
  • Oils and antifreeze can enter the combustion chamber.
  • You can only use technical fluids for flushing systems from a reliable manufacturer.
  • An over-enriched fuel mixture can cause damage.
  • Long engine idling can also lead to malfunction.
  • Sports

These are metal products with increased flow capacity compared to conventional metal or ceramic converters. Sports catalysts make the car 7–20% more powerful, of course, if the vehicle is equipped with a direct-flow exhaust system. Sports converters meet the environmental requirements of Euro 4 and 5. These models have increased reliability. However, if you are going to purchase such a car catalyst, the price will be quite high.

How to check a catalyst for a malfunction

You can check it yourself. However, this procedure will require experience and diagnostic tools. For an accurate diagnosis, it is best to visit a specialized service center. How is the catalyst check in the car done??

    Examining the catalytic converter

Visually inspect the outside of the unit. If you find mechanical damage, dents, chips, then, most likely, the honeycomb has also deteriorated from the inside. Unfortunately, with the help of an external examination it will not be possible to determine with 100% accuracy the state of the cells. Therefore, you will have to remove the neutralizer. In addition, a light check can be performed. If the honeycomb is in order, then the catalyst in the car is working. Not every car model can be diagnosed in this way, because the catalyst device on different cars may differ.

Checking back pressure

To carry out such a check, you will need a special device. a pressure gauge. It can be used to measure the exhaust pressure. If it is higher than normal, then there is a malfunction.

First you have to get a lambda probe and connect a pressure gauge instead.

Important! The connection must be tight. We start the engine, increase and hold the speed up to 2,5-3 thousand for 10 seconds. The optimal pressure is no more than 0.3 kg per square centimeter. Does the pressure gauge show a higher pressure? This means that the catalyst in the car is clogged.

You will need a diagnostic tool to make sure that the elements and assemblies of the vehicle are in good working order using an oscillogram. The device is mounted instead of the spark plugs, then the engine is started. The data received from the device will show the status of the catalyst.

Cleaning with dismantling

Sometimes, in order to flush the catalyst in the car, you have to remove it. To do this, the vehicle must be driven onto an overpass. Disconnect the lambda probe, then unscrew the clamps with which the neutralizer is attached to the exhaust pipe or exhaust manifold. Then you need to follow these steps:

  • Using a compressor, blow out the neutralizer from both sides. The pressure should be 7-9 bar.
  • Pour ABRO aerosol foam, which is intended for cleaning carburetors, into the honeycomb. Pour foam through both nozzles.
  • Wrap up the unit with a cloth and wait 20 minutes.
  • Turn on hot water, the pressure must be strong enough. Then rinse the inner mesh of the unit. After flushing, purge with a compressor.
  • Repeat these steps again. After that, the neutralizer should dry. You must see through the honeycomb. Mount catalyst.

Note! Depending on the model of your vehicle, the lambda probe may be located inside the catalytic converter. Then, before flushing the element, you will have to disconnect the sensors and clean them of soot.

Failed to remove contaminants from the catalyst with aerosol foam? Then pour diesel fuel or kerosene into the container and lower the neutralizer there for 12 hours, you can for a day. For maximum cleaning efficiency, add acetone or solvent 646 to the diesel fuel in a 4: 1 ratio. After 24 hours, clean with aerosol foam as described above.

If you want to mechanically clean the unit, you will need fine sandpaper and a compressor to blow out the neutralizer from time to time. Of course, the mechanical cleaning method does not allow removing carbon deposits from the inside of the catalyst.

Sometimes car owners do not rinse the neutralizer, but simply pierce the clogged honeycomb with a sharp, thin awl. Performing such a procedure is justified only when none of the listed cleaning methods helped.

Causes of vehicle catalyst malfunction

The converter companies claim that they can be used for 100,000-150,000 kilometers. However, in reality, this unit may fail much earlier, especially if you live in a metropolis and constantly stand in traffic jams.

Why can the neutralizer become unusable? The fact is that the vehicle catalyst device is a filter. And the filter needs to be changed regularly.

The service life of the unit will be reduced if the ignition system is faulty. This problem is usually found on Ford and VAZ cars. If the ignition is set incorrectly, gaps will occur. As a result, the fuel mixture will only partially burn out. A huge amount of soot is formed, which accumulates in the neutralizer. The best solution is to clean it. But it won’t help if the reel melted.

Damage to this unit may occur if you use low quality fuel. It will not completely burn out. The afterburning process will take place in the collector, and directly in the neutralizer. Microparticles will clog the filter, and air will not be able to pass through it.

Signs of a malfunctioning vehicle catalyst

How to know if a car exhaust system catalyst has become unusable?

  • The “Check Engin” indicator on the dashboard lights up. It will light up if the system detects any engine error. In this situation, this is due to incorrect readings of the lambda probe sensor. To make sure that the cause of the malfunction is the catalyst, you need to diagnose it using a scanner.
  • The power of the car drops. If the catalyst in the car is out of order, the car will twitch, twitch, and the thrust will decrease. This happens because the throughput of the converter has decreased. After all, the honeycombs are partially destroyed, they were baked, the exhaust gas passage is clogged. All this leads to the fact that the engine “does not breathe”.
  • Extraneous sounds under the bottom. Do you hear knocks that occur at high revs or when you start the car? This usually happens when the ceramic honeycomb begins to break down. The fallen off particles hit the walls of the catalyst, because they are affected by the gas flow, as well as centrifugal forces.
  • Weak or even pressure of gases coming from the muffler. If the catalytic converter in the car is working properly, then, placing your palm to the exhaust pipe, you will feel that the outgoing gas stream pulsates. This is because the exhaust valves operate in turn. Have you noticed that the gas flow is weak or there is no pulsation? So the neutralizer honeycomb is destroyed.

Cleaning or flushing the vehicle catalyst

This procedure will help if you perform it when the cells are in normal working order. If they are sintered or destroyed, then washing and cleaning will not help. The only way out is to replace the catalyst in the car or install an inexpensive flame arrester.

Catalyst preventive cleaning

Auto mechanics and car owners usually use two methods to flush the car catalyst from oil and soot deposits:

  • Preventive cleaning with detergent. It is recommended to perform it every 70,000-100,000 kilometers. There is no need to remove the catalyst from the car.
  • Flushing the catalytic converter, in which the unit is dismantled and disassembled.

Mechanical cleaning requires a compressor and fine sandpaper. Of course, with the help of this cleaning method, it will not be possible to eliminate internal contaminants. carbon deposits in ceramic honeycombs.

Many car owners use a chemical composition to flush out the catalyst in a car that has been previously dismantled. For example, you can use ABRO aerosol, which is used to clean the carburetor. In some cases, car owners use kerosene, ethanol, and so on, but no one can guarantee that such flushing will not damage the neutralizer. Harsh detergent can ruin the catalyst, and you will have to spend a large amount of money to buy a new unit.

To flush the catalyst with Hi-Gear or any other means, you must fill the fuel tank and then refuel the vehicle. You do not have to put in efforts: the cells of the neutralizer will clean themselves during the operation of the car, and contamination will come out through the exhaust pipe.