Find the Causes of Catalytic Converter Failure in Your Mini by Phoenix Mechanic

Find the Causes of Catalytic Converter Failure in Your Mini by Phoenix Mechanic For the overall functions of the Mini, the catalytic converter is playing an integral role. In general, the catalytic converter is an important part of the exhaust/emission system which is located beneath the car or the midway from the engine.

However, its main function is to convert the harmful gases produced from the engine into less harmful emissions which is beneficial for the environment. Due to many reasons like large bumps or debris in the road, the catalytic converter is failed especially in cars that are designed lower to the ground.

As a result, the functions of the car are comprised and cause serious problems. Try to consult with a reputed specialist for addressing the failed catalytic converter and fix it on time. The following points define the signs of a failed catalytic converter in the Mini.

Oil or antifreeze in the exhaust system If the oil or antifreeze is entering into the exhaust system, then it will create a thick carbon or soot that can clog the air passages in the converter’s ceramic honeycomb catalyst. When it happens, the carbon deposits in the catalytic converter are unable to remove the harmful emission in the exhaust flow.

On the other hand, if the ceramic catalyst is clogged with pores, then it will restrict the exhaust flow in the car. As a result, heat is produced inside the engine and creates excess back pressure that may damage the internal engine with other issues like:    

Burnt exhaust gases back into the combustion chamber by the engine Overheat the several engine components Create a loss of power Reduce the efficiency of the burn cycle

Structural damages Every catalytic converter has a catalyst honeycomb that is generally made from thinwalled, lightweight, and fragile ceramic materials as well as wrapped with a dense and insulation mat for holding the catalyst and provides a high level of protection against the severe damages of the engine.

When the catalytic converter is driven over the potholes, off-road driving, and speed bumps, it will cause catalyst fracture. If the ceramic honeycomb is fractured, then the exhaust flow is disturbed, and increased backpressure in the exhaust system may build up heat and cause loss of power.

Unburnt fuel enter the exhaust system In a Mini Cooper, the fuel is burning inside the combustion chamber for powering up the engine. Due to any reason, if the fuel inside the combustion chamber is lef unburned, then it will enter into the exhaust system and ignite it once reached the catalytic converter.

Over time, you will notice that the converter is overheated in Mini because it is functioning beyond its normal operating limit and begins to meltdown. Moreover, these problems are also caused due to other problems in the car such as malfunctioned oxygen sensors, bad spark plugs, incorrect timing, and improper fuel mixture.

Non-functional oxygen sensor If the oxygen sensor of the car is malfunctioned due to any reason, then it will send incorrect readings to the dashboard computer about the exhaust gases. As a result, the incorrect readings are causing improper fuel mixture in the combustion chamber of the car.

Subsequently, the improper fuel mixture and melting down of the catalyst will burn fuel inside the converter as well as unable to change the hydrocarbons into safe environments. Over time, your car will fail the emission test poorly.

Lack of engine tune-up All we know is that the engine needs scheduled service and maintenance for its smooth functioning. If the engine is burning more oil for any reason like stuck rings, worn cylinder walls, and worn valve guides, then it will damage the catalytic converter entirely in your car.

When the engine parts are running out of their specification, they will be worn out and damage several parts of the catalytic converter and affect the functions of the engine as well. Moreover, the misfiring spark plugs and incorrect air/fuel mixture also fail the catalytic converter badly.

Conclusion Apart from the above-defined points, the catalytic converter of the Mini Cooper is also failed for many other reasons. If you are currently living in Phoenix and found that the catalytic converter of your Mini is not functioning properly, then it's always advisable to diagnose the converter by a reputed mechanic and try to fix it as soon as possible.