Fuel Injectors
2003 Arctic Cat Snowmobiles
The fuel injectors are positioned in the top of each throttle body. O-rings seal the top and bottom of each injector, and they are held in position by a locking plate secured to the fuel rail.
The fuel injector is an electromagnetic injection valve controlled by a signal from the ECU. The coil used in the injector is a high-pressure resistance type. The ECU determines the optimum fuel injection time and duration based on signals from the five sensors.
When voltage is sent to the fuel injector, it energizes the coil and opens the needle valve, thereby injecting fuel. Because the fuel pressure (pressure differential between fuel line and manifold) is kept constant, the amount of fuel injected is determined by the duration of time the valve is open.
The injectors are coded with symbols. When replacement of a fuel injector is necessary, the injector must be replaced with an injector of the same code symbol.
Updated on: Wednesday, January 27, 2021