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 System: Description
The air injection system is used to add secondary air to exhaust ports to further the burning of hot exhaust gases. This reduces HC and CO levels. System consists of air pump with built-in relief valve, by-pass valve (Federal only), check valve and air injection manifold. California models are equipped with an air switching valve, which operates in response to over-temperature control system, and a mixture control valve which is an afterburn protection device.
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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.