How do you test a secondary air injection pump?
The secondary air valve can be quickly inspected in an easy way:
- Loosen the connecting hose on the secondary air non-return valve leading to the secondary air pump.
- If there are deposits on this side of the valve (finger test, see Fig.
- Inspect the secondary air pump and replace it if necessary.
Can you bypass secondary air injection?
The bypass kit can prevent many of the trouble codes caused by a mechanical failure of the secondary air pump or a secondary air valve saving you as much as a $2000-$4000 on a repair bill, turn off your CEL and keep the vehicle out of limp mode.
What is the prime source of problems in secondary air systems?
A faulty pump is generally the most frequent cause of the system failing. Ingress of moisture can cause damage which results in seizure of the pump. Faulty ground and voltage supply can also cause the pump to fail.
What does the secondary air injection system do?
Secondary-air system components 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.
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 .
What is the purpose of secondary air injection?
The primary purpose of a secondary air injection system is to consume the excess fuel that is injected during cold-start enrichment before it can reach the catalytic converter. This has the effect of improving tailpipe emissions.
What is a secondary air pump?
The secondary air pump. The secondary air pump must draw in ambient air and inject it into the exhaust gas manifold downstream of the exhaust valves. If the air is drawn not from the intake area but directly from the engine compartment, a separate air filter is built into the secondary air pump.
What is a secondary air injection check valve?
The secondary air injection system is an emissions system equipped on many road going vehicles. It is composed of several components that work together to reduce the vehicle’s tailpipe emissions. One of these components is the air pump check valve. The air pump check valve is the valve that allows air supplied from the air pump to be pumped…