Fuel Injector Pump Diagram. The higher pressure raises the boiling point of the gasoline. Fuel drain manifold 7.
The main causes of fuel injector wear or failure is contamination of the fuel system. The purpose of the fuel injection system is to deliver fuel into the engine cylinders while precisely controlling the injection timing fuel atomization and other parametersthe main types of injection systems include pump line nozzle unit injector and common rail. Extensive chapters on fi theory and exceptional.
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Fuel pump wiring for the red circuit is generally going to carry a much higher current than the relay. Fuel injectors are considered to be dirty when the hydrocarbons and additives which all forms part of todays fuels together with engine gunk and carbon cause the injectors to become restricted. The fuel pressure test gauge connects to the schrader valve located on the fuel injector rail passenger side of the intake manifold. F122 not used.