![]() Under some circumstances, port fuel injection will provide more torque. But, under certain engine speed and load conditions, direct injection can produce soot due to a lack of vaporization. Direct fuel injection is better at cooling the combustion chamber and controlling fuel trims under certain conditions. But port fuel droplets can drop out of suspension when they hit the intake valve before entering the combustion chamber. Port fuel injection can offer better vaporization under certain conditions. However, port fuel injection and direct fuel injection systems each have their advantages and disadvantages. Both sets of injectors work together for the best possible fuel mixture in the cylinder. ![]() And, the port fuel injectors are not there to clean the intake valves these injectors work to provide fuel to the engine. The direct fuel injectors are just like any other direct fuel injection system.
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