What does secondary air injection pump do?

What does secondary air injection pump do?

The secondary air injection pump (also referred to as a smog pump or SAI pump) is responsible for lowering the number of carbon emissions that come out of the tailpipe of a vehicle. This is necessary since a vehicle engine is never 100% efficient in the combustion process.

How is secondary air injection system diagnosed?

How to Diagnose a Bad Secondary Air Injection Pump?

  1. Check Combination Valve & Control Relay. Combination valve failure can cause a secondary air injection pump to overheat and stop functioning.
  2. Perform Acoustic Check.
  3. Check Control Valve and Hose Fittings.
  4. Check the Fuel Tank Pressure Relief Valve.
  5. Perform Actuator Test.

How do I know if my smog pump is bad?

One of the first symptoms of a bad or failing smog pump is a rough running engine. When a smog pump fails the finely tuned air-fuel ratios can be upset, and it will negatively affect the performance of the engine. The engine may have trouble idling, and may drop in engine speed, or stall when the pedal is pressed.

Can a bad secondary air pump cause a misfire?

Can a Secondary Air Pump Cause a Misfire? Yes, a misfire is a common sign of a faulty secondary air system. If the pump isn’t working properly, there will be too much fuel and not enough oxygen in your vehicle, which often results in a misfire.

Can you drive with a bad air injection pump?

While failing a smog test is a serious enough problem, the real danger from a bad air pump is the possibility that reduced engine performance and driveability could cause be hazardous to your driving safety.

Can you drive a car without secondary air injection?

Can You Drive Without a Secondary Air Pump? Technically speaking, you can drive without a secondary injection pump. However, doing so is not advised.

Will a car run without secondary air pump?

Which begs the question: Does a car need a secondary air injection system to run? Strictly speaking, no, it doesn’t.

Can you drive without the secondary air pump?

Technically speaking, you can drive without a secondary injection pump. However, doing so is not advised. What is this? This stems from the fact that a faulty secondary injection pump can cause a host of drivability-related issues, most of which can vary significantly in severity, on a case-by-case basis.

Can you drive with secondary air injection system?

Technically speaking, you can drive without a secondary injection pump. However, doing so is not advised. This stems from the fact that a faulty secondary injection pump can cause a host of drivability-related issues, most of which can vary significantly in severity, on a case-by-case basis.