How to service the Secondary Air Injection Pump on Buick Century?

Service of the Air Injection Pump requires a shutdown of ignition power. Begin the service of Air Injection by unclamping the AIR exhaust pipe hose pinch clamp followed by disconnecting the exhaust hose from the pump. The service of the AIR pump begins with disconnecting its electrical connector followed by unfastening the nuts that secure the AIR pump bracket to the frame. The mechanic should remove the AIR pump together with its bracket unit. You need to mount the AIR pump together with the bracket on the Frame by applying the nuts before torquing them to 50 N.m (37 lb ft). Connect the electrical connector on the AIR pump while applying light lubrication to the inner hose area before connecting it to the pump outlet port. The last step includes placing the AIR exhaust hose pinch clamp around the union between the AIR pump outlet port and hose.

OEM Buick Century Secondary Air Injection Pump

Secondary Smog Air Injection Pump

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Buick Century Air Pump Part Number: 12568241
$224.05 MSRP: $455.06
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Product Specifications
- Other Name: Pump, Air Injection Reactor Pump And Multi-Function Air Compressor; Secondary Air Injection Pump; A.I.R. Pump; Pump; Pump, Air Injection Reactor Pump And Multi - Function Air Compressor
- Replaces: 24507964
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2000-2001 Buick Century | Custom, Limited | 6 Cyl 3.1 L GAS
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Buick Century A.I.R. Pump Part Number: 7842076
Product Specifications
- Other Name: Pump Assembly-Air Injector; Secondary Air Injection Pump; Pump, Air Injection Reactor Pump And Multi - Function Air Compressor
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1984-1986 Buick Century | Custom, Estate Wagon, Limited, T-Type | 4 Cyl 2.5 L GAS, 6 Cyl 2.8 L GAS, 6 Cyl 3.0 L GAS, 6 Cyl 3.8 L GAS, 6 Cyl 4.3 L DIESEL
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Buick Century A.I.R. Pump Part Number: 7835233
Product Specifications
- Other Name: Pump Assembly- Air Injection; Secondary Air Injection Pump; Pump, Air Injection Reactor Pump And Multi - Function Air Compressor
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1984-1985 Buick Century | Custom, Estate, Estate Wagon, Limited, Olympia Limited, T-Type | 6 Cyl 3.0 L GAS

Buick Century Secondary Air Injection Pump

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Whenever there is consume of fuel in a car, there is always produce of Hydrocarbons (HC) and Carbon Monoxide (CO) among other emitters, and in order to minimize their production in Buick Century vehicles, there is this Secondary Air Injection Pump in the Air Injection Reactor (AIR) system which just blows fresh air into the exhaust system to increase the rate of oxidation of unburned fuel. This system generally comprises of an electric or belt-driven air pump, air control valve and those check valves which help to regulate the air flow depending on the engine temperature and other conditions of operation. This Secondary Air Injection Pump is used in Buick Century models to inject pressurized air into the exhaust ports during engine warm-up then into the catalytic converter at the optimum temperature is attained. This approach benefits in reducing emissions during some phases of the engine operation that is vital for an efficient operation. Further, there are also some safety measure like diverter valves as well as one-way check valves in order to avoid back fire and to protect the pump from exhaust gas. Altogether, the Secondary Air Injection Pump is crucial for emissions regulations and better fuel economy in Buick Century automobiles.

Buick Century Secondary Air Injection Pump Parts Questions & Experts Answers

Air Pump
12568241
Q: How to service the Secondary Air Injection Pump on Buick Century?
A:
Service of the Air Injection Pump requires a shutdown of ignition power. Begin the service of Air Injection by unclamping the AIR exhaust pipe hose pinch clamp followed by disconnecting the exhaust hose from the pump. The service of the AIR pump begins with disconnecting its electrical connector followed by unfastening the nuts that secure the AIR pump bracket to the frame. The mechanic should remove the AIR pump together with its bracket unit. You need to mount the AIR pump together with the bracket on the Frame by applying the nuts before torquing them to 50 N.m (37 lb ft). Connect the electrical connector on the AIR pump while applying light lubrication to the inner hose area before connecting it to the pump outlet port. The last step includes placing the AIR exhaust hose pinch clamp around the union between the AIR pump outlet port and hose.