Genuine Nissan Xterra Fuel Pressure Regulator

The function of the Nissan Xterra Fuel Pressure Regulator is to maintain the fuel pressure that the engine needs. The Fuel Pressure Regulator unit, mounted to the fuel rail, consists of a spring and diaphragm connected to an engine vacuum port and the fuel return line. At idle, high vacuum pushes against the spring, opening the valve and letting surplus fuel flow back to the tank. However, once the throttle opens up and the vacuum drops, the spring closes the valve more in order to keep pressure high enough for longer injector pulses. A failure of the Fuel Pressure Regulator in the closed position creates high pressure, resulting in a rich mixture, a loss of economy, and increased emissions. A broken spring or leak internal to the regulator lowers pressure, creating a lean mixture. There should be a pressure rise when the vacuum hose is disconnected. Similarly, there should be a pressure drop by applying vacuum, as is the case with a Xterra Fuel Pressure Regulator. The dependable operation is a result of the Nissan design, and the Xterra fuel system from Nissan ensures that the Fuel Pressure Regulator functions properly in a stock Nissan Xterra.

If you need any OEM Nissan Xterra Fuel Pressure Regulator, feel free to choose them out of our huge selection of genuine Nissan Xterra Fuel Pressure Regulator. All our parts are offered at unbeatable prices and are supported by the manufacturer's warranty. In addition, we offer quick shipping to have your parts delivered to your door step in a matter of days.