The common rail pressure sensor is located on the fuel rail. Its function is to monitor the fuel pressure in the common rail. Sensor is used by the ECM as a part of the calculation for the % duty cycle applied to the Fuel Pressure Control Valve and Fuel Quantity Control Valve.

A minimum rail pressure of 5,000 PSI (345 bar) is required to start the engine. 2. The rail pressure during normal idle should be 5,600 – 6,500 PSI (386 – 448 bar).

Idle rail pressure should 5-6.5k.

Most starting problems due to low pressure are caused by bad (eroded check ball seat) injectors. You can unplug the fuel control actuator and the pressure should default to maximum (26,107 PSI), however if there is a leak in the injection system then the pump will not build enough pressure.

The 5.9 Cummins fuel pressure specs can change while driving. But on average, the fuel pressure should be about 25-27 PSI at idle. However, with no load, it should be about 17-22 PSI at 2500 RPM. On the other hand, you should get about 32-35 PSI at WOT.

How long does it take to replace a fuel rail pressure sensor? A professional mechanic would require roughly 5 hours. (If just the regulator is replaced that takes about 1 hour ).

Common Rail Pressure Sensor. General description. The common rail pressure sensor is located on the fuel rail. Its function is to monitor the fuel pressure in the common rail. Sensor is used by the ECM as a part of the calculation for the % duty cycle applied to the Fuel Pressure Control Valve and Fuel Quantity Control Valve.

Fuel Rail Temperature (FRT) sensor Mounted under the turbocharged air outlet duct, the FRT sensor is a two-wire Negative Temperature Coefficient thermistor that the ECM uses to monitor fuel temperature. Because the fuel passes through a small radiator-style cooler (mounted underneath the cab), check for clogged cooler fins if the fuel

The Cummins HD XPI System is a common rail system that provides the highest injection pressure of any other common rail system. Primarily targeted for mid-range and heavy-duty applications, the XPI system is the result of Cummins market leading technology.

The fuel tank pressure sensor is part of the fuel pump assembly and is mounted on top of the tank or inside the tank. It’s part of the evaporative emissions system (commonly referred to as “EVAP”) and reads pressure in the fuel system to detect evaporative leaks, such as a loose or faulty gas cap.