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When talking about vehicles, especially when it is
about the vehicle's power and performance, we almost often hear only
about the powerful engines, stiff suspensions, and capable
transmissions. This is particularly true if the main topic of the
conversation is a luxury performance vehicle like BMW vehicles. Seldom,
however, would we talk about the vehicle's starting system—another very
important system that every vehicle is equipped with. Because most
people wouldn't directly associate the vehicle's engine starting system
with its performance, it is also almost always ignored.
The vehicle's starting system is composed basically of two components:
the electric starter motor (or starter) and the starter solenoid. As
you turn the ignition key to the start position, the starter solenoid
gets activated, which in turn energizes the starter motor. The starter
motor would then spin the engine a few revolutions, allowing the
combustion process to begin and the vehicle to start moving.
The main function of the vehicle's engine starting system is to induce
the engine to start moving. Sounds quite simple, right? Wrong. Starting
a cold engine requires a large amount of power and a large amount of
electricity. In order for the starter motor to induce the engine to
start spinning, it must overcome all the internal friction caused by
the piston rings, the compression pressure in the various engine
cylinders, the energy needed to open and close the valves with the
camshaft, and the power needed to start all the other components
attached to the engine, like the water pump, oil pump, alternator and
others. And because such power can only be brought by a large amount of
electricity, the starter solenoid must be able to handle enormous
current flows.
High performance vehicles as they are, BMW vehicles are equipped with
high quality and high performance engine starting system components
that makes starting a cold engine smooth and easy. Eventually, though,
these components may start to wear down with use and age. If this
happens, you really would have to replace your BMW starter motor and
starter solenoid. Luckily, these components are easily available from
the major auto parts sources you can find over the Internet. Within a
few minutes of browsing the Web, you'll surely find the parts that will
allow your BMW's engine to start properly once again.
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