Injectors: Part that rationalizes the fuel intake into the cylinders.
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It is a solenoid valve commanded by the vehicle's computer (ECU). It may be located on the cylinders or in the intake pipe. Its basic purpose is to pulverize the fuel adequately so that it can combust correctly inside of the cylinders. Each car has a specific type of injector.
My vw amarok is got a similar problem, but now while am driving, it cuts off the engine just like that, but when you start it again it starts just like that...and on the incline it drops the speed to 30kmh