How to Replace a Fuel Injector - AutoZone
https://www.autozone.com/diy/fuel-systems/how-to-replace-a-fuel-injector
WEBFuel injectors are designed to deliver fuel into the engine’s cylinders at the precise moment and in the correct quantity, ensuring optimal combustion. They’re essentially a small electric valve fitted between the fuel rail and the intake manifold, combustion chamber, or on older cars, the throttle body.
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