Porque Falla Un Catalizador

Pérdida de potencia por catalizador en mal estado
Este fallo se manifiesta con pérdidas de rendimiento del motor que notaremos  con el motor a ralentí y durante la aceleración
Es uno de los síntomas más evidentes de un fallo del catalizador.
Sucede cuando el proceso de combustión no se realiza de una forma eficiente y el combustible llega sin quemar al catalizador.
Las causas de que no se queme el combustible de una forma adecuada pueden ser problemas en las bujías y su cableado, problemas en la mezcla de aire y combustible, o fallos en el sistema de válvulas.
Esto produce que se queme el combustible en el catalizador y haga que se funda el cuerpo cerámico.
Si se ha producido este problema, el catalizador se obstruirá y deberemos realizar su reparación o cambiarlo.
Ruido en el catalizador y en la parte inferior del vehículo
En este caso lo que notaremos serán ruidos metálicos en la parte inferior debido a que hay una fractura en el catalizador.
Una de las posibles averías puede ser producida por un cambio térmico en el que el catalizador se encuentra a su máxima temperatura y se encuentra con un elemento a temperatura muy baja como puede ser la nieve.
Este cambio de temperaturas hace que se agriete el cuerpo cerámico del catalizador y produce este sonido metálico.
Si el catalizador hace ruido, lo más probable es que no esté filtrando correctamente los gases contaminantes por lo que habría que arreglar o sustituir el catalizador.
Mal olor y humo debido al fallo del catalizador

Es una señal de que el catalizador no está funcionando correctamente. Puede que el catalizador se encuentre obstruido y no esté filtrando correctamente.
La causa de este problema puede ser unaincorrecta mezcla de combustible. Una mezcla muy rica produce depósitos de carbón en el sistema de escape.
Además una mezcla incorrecta genera sulfuro de hidrógeno en altas cantidades lo que produce un mal olor.
Aceite pasando al catalizador
Cuando el aceite o el líquido anticongelante que entran en el sistema de escape y llegan al catalizador se queman, se genera un hollín que obstruye las celdas del catalizador y bloquean la función de este.
No solo esto, como los gases no pueden pasar con facilidad, quedan atrapados e incrementan la presión, lo que va a producir la pérdida de potencia y sobrecalentamiento del motor.
La causa de este problema puede ser el desgaste de los anillos de los pistones, sellos de las válvulas o mal estado de empaques.
Impactos en el catalizador
La cerámica que contiene el catalizador es frágil y ligera. Un golpe o impacto pueden hacer que se fracture.
Si esto sucede los trozos se irán desprendiendo y obstruyendo el catalizador. 


What are the benefits of Flowmasters?
Acceleration and Sound. One of the biggest benefits of your new Flowmaster exhaust system is the boost of acceleration. These systems are designs to reconfigure a vehicle's current exhaust system and to boost its performance.Magnaflow: Straight through design, filled with acoustical packing material. Mufflers are louder than stock and gives your engine more power. Flowmaster: Chambered design, no packing material. Muffler has a consistent, tuned sound but provides less power.Do Flowmaster mufflers increase horsepower?
When upgrading your muffler and increasing horsepower, you want to stick with the brand names you can trust. Flowmaster exhaust systems and Magnaflow mufflers, for instance, are known for delivering massive boosts in power and performance.Which flowmaster is the loudest?
The Super 10 Series, as expected, produced the loudest, most aggressive sound levels both inside and out of the car. And while the volume levels were similar to that of open exhaust, the Super 10 series muffler provided the distinct Flowmaster tone.

Why Catalytic Converters Fail ?

“Gross! What's that awful smell?" After driving your vehicle, you may notice a distinctive "rotten eggs" scent coming from your car. This is a classic sign that your catalytic converter is starting to fail. While “cats" have been on vehicles since the mid-1970s, many people don't know what to look for when a catalytic converter breaks. Here's some signs to watch for, and what to do about it.

Catalytic converters are efficient pieces of engineering, when they work. Maligned in the '70s, the catalytic converter was partially blamed for the end of the classic muscle car era. While it was unfortunate that muscle cars went away for several years, the cat did its job, and the air over Los Angeles is no longer the color of baby food.

The catalytic converter works by breaking down unburned gases left over by the combustion process. Nitric oxide, carbon monoxide, and unburned hydrocarbons are all toxic to humans and can cause smog. After startup, the poisonous gases pass through the catalytic converter's internal structure, which you can picture as a honeycomb design made of ceramic and coated in catalyst materials like platinum, palladium, and copper. At roughly 800 degrees Fahrenheit, the hot catalysts convert the gases into safer elements, like oxygen, carbon dioxide, and water.

In most cases, the catalytic converter will last for the entire life cycle of a vehicle...but not always. While sturdy, the catalytic converter can slowly fail over time as the catalyst elements wear out. High mileage is not the only culprit, as failure could be due to an improperly operating engine.

Worn spark plugs, or burned and leaking exhaust valves, allow unburned fuel into the exhaust system, where it ignites in the catalytic converter and melts the internals. A weak ignition system can also cause the same problem, by not getting enough spark to the plugs.

Catalytic converter problems could also be something more serious, like heavily worn piston rings or jumped timing chain. These problems allow fuel or air into the wrong place at the wrong time. A head gasket or intake manifold leak can cause problems too, as oil or coolant can coat the catalyst, setting off a check engine light. On some older vehicles, a flashing check engine light will be your tipoff to catalytic converter overheating, and it shouldn't be ignored.

Keep in mind that the catalytic converter could fail again in a short time if an underlying issue is not fixed. Keep your ride tuned up, and your cat will live longer.

Sulfur smell

Large fuel economy decrease

Failed emissions test

Check engine light

Discolored or warped outer housing

Noticeable lack of acceleration

Hard starting or no-start condition.

* Source from the internet


Whats better MagnaFlow or Flowmaster?
Magnaflow: Straight through design, filled with acoustical packing material. Mufflers are louder than stock and gives your engine more power. Flowmaster: Chambered design, no packing material. Muffler has a consistent, tuned sound but provides less power.Are MagnaFlow mufflers reversible? Increasing the airflow of the muffler allows for a better flow of air from the engine out of your exhaust, this makes increases in horsepower easier to achieve. ... Please Note: This MagnaFlow muffler is completely reversible for the ability to fit custom installation needs.Does MagnaFlow add horsepower? Replacing your car's muffler alone is not enough to open up the restrictive exhaust system and allow the extra airflow that increases performance. ... MagnaFlow, an aftermarket exhaust manufacturer, says that its customers can expect horsepower gains of around 10 percent (which is a pretty commonly-quoted figure).Is true dual exhaust better than single?
However, most would agree that a dual exhaust will give you better performance gains compared to a single exhaust system. Because the exhaust gases exit each manifold through two pipes rather than just one, they can exit the engine faster and provide additional horsepower gains.


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