The idle air control (IAC) does this, not the "flapper".
does the engine have a carburetor or is it fuel injected? A carbed engine has mixture screws along with a base idle screw, a fuel injected engine the idle is computer controlled.
In a gasoline engine, it is a fuel-air mixture that is drawn in during the intake stroke, unless the engine is fuel injected. In a fuel injected or a diesel engine, it is air, because the fuel (gasoline or diesel) is injected at the "last moment" before ignition.
fuel pump
A four stroke engine has four basic operations within the engine. It has Intake, compression, power and exhaust strokes. During the intake, or suction stroke, a mixture of fuel air is injected into the cylinder.
Either the Carbourator (older cars) or the ECU (fuel injected)
Routes the fuel and air mixture into the engine on an engine with a carburetor or throttle body fuel injection. Routes the air to the engine on a multi-port or direct injection fuel injected car.
To keep water out of the engine if it rains
The intake manifold routes the fuel/air mixture to the cylinders or just the air on a modern fuel injected engine. The exhaust manifold routes the burnt fuel gases out of the engine into the exhaust system.
Yes 2.4L is fuel injected
Yes, the SL1 is a multi-port fuel injected engine with a single overhead cam.
Yes, it is.
All fossil fuel, and biodeisel engines are internal combustion engines. Internal combustion engines are engines that requier a propellant (Gas, diesel etc..). The fuel gets injected into the engine and mixes with air, the mixture gets injected into a cylinder, a piston compresses the mixture and then a small spark from a spark plug ignites the mixture. this lets the engine drive a shaft that can be connected to a number of things, tires, lawnmower blades, what ever.Airplanes, lawnmowers, chain saws, weed eaters, four wheelers, dirtbikes, cars, trucks etc.. all these are ICE's