What Causes Low Pressure in the Fuel Rail System?
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Low pressure in the fuel rail system can be caused by fuel line blockage, excessive water in the fuel, or issues with the common rail or injectors. Below is an introduction to the system: Overview: The fuel rail, also known as the high-pressure accumulator, is the fuel line pipe located before the injectors that supply fuel to the cylinders in an internal combustion engine. It includes a fuel inlet and seat pockets (or seats) connected to multiple injectors. Some fuel rails have a pressure regulator at one end. Function: The high-pressure fuel rail stores fuel while dampening pressure fluctuations caused by the high-pressure pump's fuel supply and the injectors' fuel injection, ensuring stable system pressure.