Mazda 6 Fuel Pump is the core of the delivery system that forces gasoline from the tank to the engine to ensure that the correct mixture is supplied in every combustion stroke. The early systems connected to carbureted trims were a camshaft-driven mechanical pump mounted on the engine block, which drew fuel at about 6-15 psi and directed that fuel towards the float bowl of the carburetor using an installed lever and diaphragm. With the replacement to fuel injection, Mazda converted to an in-tank electric pump that turns each time the ignition signals the appropriate voltage, dampens the fuel to cool it, and supplies 40 to 60 psi of fuel to the injectors. The electric design also accommodates a sending unit that operates a float arm to supply the dashboard gauge, combining two tasks in one module. In case the engine cranks but does not start, the operators can hear the gentle whirr of this pump and proceed to test the wiring or the relay. Performance ratings are calculated in gallons per hour or liters per hour, and the decision on the correct unit differs depending on the horsepower requirements, with naturally aspirated systems requiring approximately 0.5 pounds of fuel per horsepower per hour. Although a hungry carb upgrade might still require a high flow mechanical style with a pressure regulator, most contemporary Mazda 6 models favour the steady high-pressure output of their electric Fuel Pump, which the engine control unit has adjusted to save energy and extend the life of the Fuel Pump. Mazda 6 maintains the flow of fuel in any situation regardless of the driving load.
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