Symptoms of a Bad or Faulty Exhaust Air Supply Pipe

Common signs include exhaust leaks, engine performance problems such as reduced power and acceleration, and increased emissions.

The exhaust air pipe is an exhaust and emission component commonly found on many road vehicles. Its main purpose is to allow air into the exhaust stream so that the temperature of the exhaust gases can rise to the required level for the catalytic converter to operate. Catalytic converters and oxygen sensors require a certain temperature to operate and generally do not work for the first few minutes after starting the engine.

The exhaust air supply pipe forces air into the exhaust stream just after leaving the engine to raise the temperature so that the catalytic converters and oxygen sensors can reach operating temperature as soon as possible. Because the exhaust air pipe is a component of the exhaust system, it is subject to high temperatures and stress and is therefore prone to rust or corrosion under extreme conditions. When it fails or has any problems, it can cause handling and emissions issues of the vehicle. Usually, a bad or defective exhaust air supply pipe causes several symptoms that can alert the driver to a potential problem.

1. Exhaust leaks

One of the first symptoms of an exhaust air pipe problem is an exhaust leak. If the exhaust air pipe breaks, cracks, exhaust gas may leak. Exhaust leaks often cause a hissing or rattling sound to come from the engine bay and, if left uncorrected, can develop into engine problems.

2. Problems with engine operation

Another sign of a possible problem with the exhaust air pipe is problems with the engine. If there is indeed an exhaust leak in the pipe, and the leak is large enough, it can result in reduced power, acceleration, and even fuel economy of the vehicle.

3. Increase in emissions

Another sign of a bad or faulty exhaust air supply pipe is an increase in emissions. A blocked, clogged, damaged or broken tube can also lead to increased emissions. An exhaust leak due to a broken pipe can cause the oxygen sensors to give incorrect readings and reduce the efficiency of the catalytic converter. A clogged tube will restrict air from entering the exhaust stream, which will also affect the performance of the oxygen sensors and catalytic converter. Both of these issues can lead to increased engine emissions, which will be a problem in states where emissions are highly regulated.

Although many new vehicles now use different emission technologies and therefore components, exhaust air pipes are still widely used in many road cars and trucks. If you suspect there may be a problem with your exhaust air pipe, have a professional technician, such as AvtoTachki, check your vehicle to determine if your vehicle needs an exhaust air pipe replacement.