Where is the fuel pressure control valve located?
The first remains located on the injection pump. A second regulator is located on the front of the left fuel rail and has a normally open solenoid. A pulse width modulated is applied to this regulator to control the amount of fuel returned to the fuel tank. Two regulators are used for OBD-II fuel system monitors.
How does the fuel tank pressure sensor work?
The Fuel Tank Pressure Sensor (FTPS) is an integral part of the monitoring system. The FTPS checks Purge Control Solenoid Valve (PCSV) operation and leaks in the Evaporative Emission Control System by monitoring pressure and vacuum level in the fuel tank during PCSV operating cycles.
How is the fuel tank ventilation valve connected?
This depends a bit on what model the vehicle is. On some vehicles, the valve and the tube from the tank form a complete assembly that is easy to access. On others, the tank would need to be dropped to gain access to its top (where the valve tube is connected). If necessary, dropping a fuel tank is an involved process.
How does a fuel pressure relief valve work?
The pressure relief valve simply allows more or less high pressure fuel to flow into the back leak system thus increasing or decreasing the fuel pressure in the rail. Excess fuel returns to the fuel tank.
Where is the fuel pressure regulator located in a car?
A fuel pressure regulato r is located at the end of the fuel rail and it connects to the injectors of the car. To locate the fuel regulator, you must first find and follow the fuel rail in your engine and you can find it at the end, before the fuel gets into the engine.
Does fuel pressure regulator have a check valve?
The other check valve is inside the fuel pump but the primary check valve is the one inside the fuel pressure regulator which is, by itself, responsible for maintaining fuel pressure between it and the fuel injectors that are upstream of it.
Where does the fuel pressure regulator go on an engine?
A fuel pressure regulator is a part of your fuel system. It is usually mounted on the fuel rail , but can also be mounted on the fuel return hose . The fuel pressure regulator is controlled by a small vacuum hose leading to the inlet. If there is negative pressure in the inlet when idling, it lowers the fuel pressure.
Is a fuel pressure regulator leak dangerous?
If the fuel pressure regulator’s diaphragm, or any of the seals fail, fuel leaks can occur. A faulty regulator can not only leak gasoline, which is a potential safety hazard, but can also cause performance issues as well. A fuel leak will usually produce a noticeable fuel smell, and may also cause engine performance issues.