Every car needs to have secondary air injection system installed and functioning normally, to allow exhaust emissions and aid in further combustion of toxic gasses. However, your secondary air injection system may fail, meaning that you need to seek repair services. The following are the things to take into account when seeking repair of secondary air injection system:

Primarily, you need to understand why you should repair the secondary air injection system. Repairing the system will not only ensure a cleaner car, but also a more efficient car. In addition to reducing harmful emission, repairing your car's secondary air injection system will ensure a superior fuel economy. The repair will also ensure that your car continues functioning efferent, especially if the system is belt-driven. Damaging the belts may render your car not running, or extend the damage to other parts of the car.

Also, understand what the mechanic will repair the secondary air injection system. The mechanic can choose to take off the broken belt or detach electrical connectors to replace the air pump with a new or repaired one for the secondary air injection system. Also, the surrounding will be checked to ascertain no secondary damage and if damaged, additional repair may be undertaken.

You also need to understand when you need to have your secondary air injection system repaired. On a normal circumstance, you might still continue driving even when the system spoils. The belt-driven system may fail to knock off adjacent belts, an effect that can end up in serious damage. However, the damage may not affect the functionality of the car, but it will emit harmful gases and the emission system collapse completely. You can notice that your car needs repair of secondary air injection system by checking the emissions. In most cases, dark gases point out to the possibility of a failed emission system. You can also pay attention to the noise produced by the car. If it is not the normal sound, your secondary air injection system should be repaired as soon as possible. https://en.wikipedia.org/wiki/Diesel_engine  

Further, you need to take the cost of repair into account. While secondary air injection system can be easily repaired, you can easily save some money by comparing mechanism and their charges. Look for a mechanic with a reputation for low-cost repair services, and can complete the task in the shortest time possible. Therefore, take into account that secondary air injection system repair requires a competent, reliable and low-cost mechanic.