Secondary Air Injection Check Valves

Replacement Parts > Emission Control > Air Injection System

Secondary Air Injection Check Valves

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What is a secondary air injection check valve?

A secondary air injection check valve is a device that helps to clean up engine exhaust emissions by allowing air to be injected into the exhaust when emissions are high. It also helps to reduce exhaust noise.

How do I determine if my secondary air injection check valve is faulty?

You can determine if your secondary air injection check valve is faulty by checking for these symptoms:

  1. Poor engine performance.
  2. Increased fuel consumption.
  3. Excessively high emissions from the exhaust.
  4. Engine runs rough or misfires.


Can a faulty secondary air injection check valve cause damage?

Yes, a faulty secondary air injection check valve can cause damage to the engine if the problem is not addressed. The increased emissions can cause corrosion and wear on the engine components.

How do I replace my secondary air injection check valve?

Replacing a secondary air injection check valve is relatively simple. Here are the steps:

  1. Disconnect the negative battery cable.
  2. Remove the air injection hose and the check valve.
  3. Install the new check valve and reattach the air injection hose.
  4. Reconnect the negative battery cable.


How often should I inspect my secondary air injection check valve?

It is recommended to inspect your secondary air injection check valve at least every 6 months. This will help ensure that the valve is working properly and that it is not causing any damage to the engine.