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Where is my fuel pressure regulator located?
A fuel pressure regulator 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.
How do I get rid of fuel pressure?
Relieving Pressure with the Fuel Pressure Regulator
- Disconnect the negative battery cable using a wrench.
- Locate the fuel pressure regulator on the fuel rail.
- With your hand, remove the vacuum hose from the top of the fuel pressure regulator.
- Connect a hand-operated vacuum pump to the top of the pressure regulator.
What should I do if my fuel pressure regulator is bad?
Let the engine run and disconnect the vacuum hose from the regulator. When the hose is disconnected, the fuel system’s pressure should increase by 8 to 10 psi. If there is no change, this means that the pressure regulator is defective and must be replaced.
What should the fuel pressure be when the hose is disconnected?
When the hose is disconnected, the fuel system’s pressure should increase by 8 to 10 psi. If there is no change, this means that the pressure regulator is defective and must be replaced. Find more information here: Testing a fuel pressure regulator.
How to check fuel pressure regulator with OBD2?
On newer vehicles, the fuel pressure regulator can be conveniently checked with an OBD2 scanner in any garage or at home, but it is always a good idea to check it manually as well. If you are interested in an OBD2 scanner for use at home, you can take a look at our overview article: OBD2 scanner review.
What causes black smoke from a fuel pressure regulator?
Black smoke is caused when your air-fuel mixture is too rich, which definitely can be caused by a faulty fuel pressure regulator.