Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Air Injection Reactor System: Description
Air Injection system reduces hydrocarbons (HC), carbon monoxide (CO) and nitrous oxide (NOx) emissions by injecting air into exhaust system.
A belt driven air pump injects air into either exhaust port of cylinder head, exhaust manifold or catalytic converter. Air Injection system operates at all times and will by-pass air only for a short time during rich operation, deceleration or at high speeds.
Air management valve performs by-pass and diverter function. Check valve protects air pump from damage by preventing a backflow of exhaust gases.
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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