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Genuine Buick Century Secondary Air Injection Check Valve
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7 Secondary Air Injection Check Valves found
Buick Century Secondary Air Injection Check Valve
The Secondary Air Injection Check Valve, Buick Century, controls airflow in one direction to protect the air pump and assist in exhaust emission control. Each Secondary Air Injection Check Valve opens when the pump delivers pressurized air and closes when exhaust backpressure is present. They are installed in the plumbing ahead of the exhaust manifold and ahead of the catalytic converter. In Buick applications, one-way action prevents the pump from overheating. Century drivers benefit from stable emission performance. The ECM's reading of oxygen levels is also supported by proper sealing of the Secondary Air Injection Check Valve. As it opens, the valve allows fresh air to enter the exhaust stream so that unburned fuel can oxidize, reducing hydrocarbons and carbon monoxide. By closing, the valve stops reverse flow which blocks hot exhaust gases from traveling back through the pump where they could cause damage. During engine warm-up, air is routed to the manifold. The Secondary Air Injection Check Valve opens under pump pressure. When the flow is redirected to the catalytic converter or vented to atmosphere in deceleration, backpressure from the exhaust closes the valve. Each Secondary Air Injection Check Valve's reliable operation helps Buick Century meet emission targets and protect system components.
Each OEM Buick Century Secondary Air Injection Check Valve we offer is competitively priced and comes with the assurance of the manufacturer's warranty for the part. Furthermore, we guarantee the speedy delivery of your orders right to your doorstep. Our hassle-free return policy is also in place for your peace of mind.
Buick Century Secondary Air Injection Check Valve Parts Questions & Experts Answers
- Q: How to Remove,Install and Service the Secondary Air Injection Check Valve and Secondary Air Injection Pump on Buick Century?A:The Air Management System (AMS) introduces extra oxygen after exhaust gasses through the combustion chamber are ejected and works similarly to the AIR system. Located upstream the exhaust port is an engine-driven air pump sending air into the exhaust ports or manifolds or catalyst; the air pump works always, temporarily by-passing air through the Air Management Valve during deceleration and high speed; there is a check valve preventing back flow of exhaust. This system cuts HC and CO emission by opening the exhaust ports to the air intake during cold engine operation and help the Catalytic Converter to heat up quickly. During the warm up the air is supplied to the beds of the catalytic converter in order to reduce the level of HC and CO and, at the same time, the oxygen level remains low in the first bed for accurate reduction of NOx. The ECM controls air intake to include air to the air cleaner or atmosphere depending on the engine temperature and operating condition to avoid back firing during deceleration. Normal inspections of the check valves and hoses to look for formation of leaks, cracks or deterioration must be made. For removal and installation of the air pump, one has to loosen the V-belt adjuster bolt-The belt has to be removed-Unscrews the mounting bolts, and for installation, do the reverse while ensuring the belt tension is correct. The check valve consists of removing the check valve line from the pump assembly then removing the check valve from the air injection pipe, the reverse of how it is fitted. For the Air management valve, one has to disconnect the negative cable, take off the air cleaner, tag and disconnect the hoses and air management valve bolts and reassemble the air management valve in the reverse procedure.
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2000 Secondary Air Injection Check Valve 1989 Secondary Air Injection Check Valve 1988 Secondary Air Injection Check Valve 1987 Secondary Air Injection Check Valve 1986 Secondary Air Injection Check Valve 1985 Secondary Air Injection Check Valve 1984 Secondary Air Injection Check Valve 1983 Secondary Air Injection Check Valve 1982 Secondary Air Injection Check Valve