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 The Fuel Supply System
This system is responsible for the storage and delivery of gasoline. The system consists of a storage tank, electric pump,several filters,supply and return lines,fuel rail and pressure regulator. On most newer vehicles, fuel is stored in a plstic tank, and delivered to the fuel rail via a combination the rail with more than enough fuel to satisfy engine requirements. The pressure regulator varies the fuel pressure according to the specific engine operating condition, and returns excess fuel to the tank.