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Genuine Oldsmobile Cutlass Secondary Air Injection Check Valve
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15 Secondary Air Injection Check Valves found
Oldsmobile Cutlass Secondary Air Injection Check Valve
The Oldsmobile Cutlass Secondary Air Injection Check Valve allows pressurized pump air into the exhaust stream while sealing against back-pressure from hot gases that could scorch the pump and hoses, thereby protecting the exhaust air system. Located ahead of the exhaust manifold during cold starts and ahead of the catalytic converter once normal temperature is reached, the valve works with the AIR pump, air control valve, vacuum switch, and diverter valve to hasten catalytic converter light-off and reduce hydrocarbon and carbon monoxide emissions. A healthy Secondary Air Injection Check Valve can prevent cold-start backfires. The pump forces air to the manifold where the exhaust pressure is lower than the pump air pressure, so the Secondary Air Injection Check Valve is spring-loaded in the open position. As the flow goes downstream further, the exhaust back-pressure snaps it shut. It is simply mechanical one-way protection that does not use any electronic components. Oldsmobile Cutlass models have two styles, one an upstream unit for cylinder-head injection and the other a downstream unit for catalytic-converter injection, the difference being in mounting position and the back-pressure range sealed against. When a Secondary Air Injection Check Valve burns or leaks, the hot exhaust can infiltrate the system, tripping ECM fault codes, cutting fuel economy, and risking emissions-test failure. In order to keep any Oldsmobile Cutlass running clean, you want to consistently inspect hoses and each Secondary Air Injection Check Valve for heat damage.
Each OEM Oldsmobile Cutlass 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.
Oldsmobile Cutlass Secondary Air Injection Check Valve Parts Questions & Experts Answers
- Q: How to diagnose, remove and install Diverter Valve,Secondary Air Injection Check Valve and Secondary Air Injection Pump on Oldsmobile Cutlass?A:The air injection reactor system acts to minimize the amount of hydrocarbons in the exhaust through the introduction of fresh air into the exhaust manifold ports of each engine cylinder helping in the burning of the uncompeted hydrocarbons. It runs through all engine speeds and the passage of air is blocked only sometimes during deceleration and at high speeds when fresh air in abundance may cause back fires. In GM engine, the parts of this system include the air injection pump, an air diverter valve, manifold, and injection tubes, and the check valves that are provided at the end of hose connected to the pump. Installed automotive systems are dependable, but failure of any of them leads to engine surge, back firing, overheating sparks, although the air-pump is the most sensitive part. The drive belt should also be checked for crack or fray and also make sure that it has the right tension. The hose should be examined for flow when the engine is on, and the diverter valve should discharge air when tested. Exhaust gases should not re-enter the air pump and for this; check valves should be installed and the functionality checked. Hose connection leaks can be done with the help of a soapy water solution to identify the leaks. For removal and installation of this air pump, the disconnect hoses, and compress the drive belt and finally remove the securing bolts. The diverter valve comes with hoses as well as securing bolts to be disconnected during removal and also has some particularities to be used with regard to the replacement valves. High temperatures may mean that the air manifold and injection tubes will need penetrating oil to remove and installation needs anti-seize compound on threads. These valves cannot be removed without disconnecting the air supply hose, then using wrenches for slow and cautious removal; the process of installation is similar to the process of removal.
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