The primary role of the Acura Integra PCV Hose is to transfer crankcase vapors to the engine intake to burn harmful fumes and not to the air. Working like a simple but vital bridge, the PCV Hose connects the spring-loaded PCV valve that is located on the valve cover to the crankcase port, allowing the valve to meter airflow while the hose carries the vapor. When the hose has remained intact, pressure is maintained in balance, emissions are reduced, and fuel economy remains steady. A split line allows unmetered air to sneak in, upsetting the air-fuel mix and causing the engine to idle roughly or waste fuel. A failing PCV Hose that is ignored can also welcome oil leaks and sludge. Throughout the production run, Acura applied rubber molded PCV Hose sections that are molded to either the driver side or passenger side layout based on model year and engine code in the Integra. Early hoses followed straight routing, and later versions gained preformed bends and protective sleeves to clear components, but all types come with common clamps. The part is inexpensive, and owners replace the PCV Hose when they change the air filter in order to keep their Acura Integra running well.
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