The secondary-air pump draws in ambient air and injects it into the exhaust manifold downstream of the exhaust valves. There is a separate integrated air filter if the air is not drawn in from the intake system but rather directly from the engine compartment.
What is the main function of the secondary air vent?
The secondary air is below the primary, and its job is to help fuel combustion by providing oxygen-rich material for burning.
Can a secondary air pump cause a misfire?
A faulty MAF sensor will cause your secondary air pump not to switch on. this can cause a rich condition, which can cause misfires, etc…
What is the purpose of the secondary air injection system?
Secondary air injection (commonly known as air injection) is a vehicle emissions control strategy introduced in 1966, wherein fresh air is injected into the exhaust stream to allow for a fuller secondary combustion of exhaust gases.
What is the purpose of a secondary air pump?
Secondary air pump is a vehicle emissions control strategy introduced in 1966, wherein fresh air is injected into the exhaust stream to allow for a fuller combustion of exhaust gases.
What does the BMW secondary air pump do?
The secondary-air pump draws in ambient air and injects it into the exhaust manifold downstream of the exhaust valves. There is a separate integrated air filter if the air is not drawn in from the intake system but rather directly from the engine compartment.
What is a secondary air pump?
Secondary Air Injection System. The secondary air injection system pumps fresh air into the exhaust system to help reduce exhaust emissions. Depending on the model, the air can be injected at one or more locations. Early systems used a belt-driven pump with air being directed by vacuum-operated switching valves.
Do you need a secondary air injection system?
The air injection smog pump pushes air into the exhaust system right after the exhaust manifold, to help intercept and burn those unburned fuels. The system is critical to help cars achieve government emissions standards. So, the law says you need a secondary air injection system .
