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Vent screws in a car's fuel system are used to release built-up pressure and prevent the fuel tank from collapsing or expanding due to changes in temperature or altitude.

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7mo ago

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Related Questions

What is the purpose of hybrid cars?

They help reduce fuel consumption and control pollution.


What is purpose of tire like air valve on side of fuel injector system?

To measure the fuel system pressure


Why do cars need a fuel filter?

Cars needs a fuel filter to ensure that minute particles of dirt and grime that may enter your fuel system do not follow the fuel line into the engine. The filter protects the engine.


What is the purpose of the fuel system?

he purpose of the fuel system is to supply the right amount of fuel for the engine to burn, and control the speed of the engine.


What is the purpose of a boats ventilation system?

Its purpose is to circulate air through engine and fuel tank compartments.


What is the purpose of the oxygensensor in vehicles exhaust system?

To tell the fuel injection what to do.


What is the purpose of a fuel vapor return hose?

The Evaporative Emission Control System(EVAP) is used to prevent gasoline vapors from escaping into the atmosphere from the fuel tank and fuel system.


Where is the location the fuel filter on 2004 KIA Spectra?

there is no fuel filter, after 2000 majority of cars do not use fuel filter mainly import cars, the only "fuel fillter" now is in the gas tank connected to the pump, but those are lifetime filters, (more of a strainer than a filter) if your wanting to keep you fuel system clean, just use a fuel injector cleaner or fuel system cleaner


What is an emission system?

The emissions system used in cars is a system which is designed to restrict the amount of pollution cars produce. Newer cars have system which prevent both Evaporative Emissions and harmful Exhaust Emissions. The Evaporative Emissions (EVAP) system prevents the escape of unburnt fuel vapor form the fuel tank, the fuel lines, and the engine. The Exhaust system uses at least one Catalytic converter, which is used to burn off gasses produced by the engine. On newer cars, both the EVAP and Exhaust are monitored by the vehicle's computer, which can alter the way the engine runs and can warn the driver of EVAP leaks.


What is the purpose of the map sensor in cars?

the map's purpose in a speed density type air/fuel management system (no mass airflow sensor) is to read intake manifold vacuum/pressure and help adjust fuel amount accordingly, along with inputs from other devices such as the throttle position sensor, engine coolant temperature sensor, and intake air temperature sensor.


Why carburetors are used in some automobiles and not used in some automobiles?

Old cars have the carburettor. Modern cars now have electronic fuel injection system


What is emissions systems?

The emissions system used in cars is a system which is designed to restrict the amount of pollution cars produce. Newer cars have system which prevent both Evaporative Emissions and harmful Exhaust Emissions. The Evaporative Emissions (EVAP) system prevents the escape of unburnt fuel vapor form the fuel tank, the fuel lines, and the engine. The Exhaust system uses at least one Catalytic converter, which is used to burn off gasses produced by the engine. On newer cars, both the EVAP and Exhaust are monitored by the vehicle's computer, which can alter the way the engine runs and can warn the driver of EVAP leaks.

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