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.
Pulse Air Injection System: Description
Pulse air feeder system supplies secondary air into exhaust system between front and rear catalytic converters. This promotes oxidation of exhaust emissions in rear catalytic converter.
This system consists of main reed valve and sub reed valve. Main reed valve is controlled by diaphragm which is activated by pressure pulses from within crankcase. Sub-reed valve is activated by pulsation in exhaust system between front and rear converters.
NO RELATED
Use the Manual With the Right Hardware
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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.