The Fuel Rail of the Dodge Neon is a major part of the injection system that helps supply fuel at very high pressure to every injector to provide the engine with fuel for its smooth power and clean fumes. The Fuel Rail is located along the intake runners to which it is fitted. The electric pump sends fuel to the Fuel Rail, which is helped by a regulator to maintain constant pressure and is sensed by the powertrain control module that adjusts injector pulse width according to speed and load. The early Dodge throttle body injection models employed a single central injector and therefore did not have their own dedicated Fuel Rail. However, during the time when port injection came to the second-generation Dodge Neon, a slim, steel or aluminum Fuel Rail became standard. This unit feeds the four individual injectors just ahead of the valves. So this change did get noticed by many Neon owners with a smoother idle. Subsequent versions introducing gasoline direct fuel injection ultimately received a common rail configuration that drives pressure much higher, leading to finer droplets and more complete combustion. The Dodge Neon from any model year relies on a proper Fuel Rail to start easy, rev easy, and avoid excess emissions.
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