The Battery
On fuel injected automobiles, the entire system is pressurized and most likely uses an electric fuel pump, so it's more of a "hands free" startup.
The Spark
Now that the engine is turning and fuel is being introduced to it, we need some way to make that fuel ignite. That is where the coil and distributor setup come into play. It should be thirteen to fifteen when the car is running.The Starter
When you turn the ignition key in your car to the "On" or "ACC" position, it sends electricity to the coil and the distributor, which will send spark to the plugs once the engine is turned over. When the ignition key is turned just a bit more, it sends twelve volts to the starter, which has gears that mesh with the engine and ultimately turn it over. Most engines don't need to turn very fast in order to start. Just a few good revolutions are all it takes.
The Fuel
Of course, your engine uses fuel of some sort. While the starter turns the engine over, a small amount of fuel is fed into it by either the carburetor or the fuel injection system. On a carbureted engine, it may be necessary to "pump" the gas pedal a few times in order to get sufficient fuel into the engine.The battery provides a vehicle with the twelve volts all-important to dynamism matters when the van isn't truly running. For startup purposes, the battery is bound to for sending electricity to the starter, the coil and the distributor, further as a decalescent wire to the alternator so that matters can recharge after starting. Provided the battery is very flimsy to turn the starter, starting the vehicle becomes arduous or impossible. A crack alternator combined with a great battery Testament direct matters at above twelve volts.
As the engine cranks over, a gear inside the distributor turns, which distributes the spark from the coil evenly across all the spark plugs via the spark plug wires. When the fuel hits this spark, it explodes or "combusts," hence the name "internal combustion engine." When this happens, it forces the piston down into the block, which will suck more fuel in. This process happens so fast that we barely notice it, and mufflers take care of most of the sound for us.
