Genuine GM Fuel Injectors pressurize the fuel and pump it through either a fixed or electronically-controlled valve, delivering the fuel as a fine, cone-shaped spray to the engine. This mist is burning more efficiently and evenly than a solid stream as well as being easier to ignite. Over time, burning fuel builds up deposits, decreasing the fuel injector’s performance and turning the mist into an inconsistent dribble. This will cause loss of gas mileage and depending on the severity can damage your engine.
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