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The fuel pressure regulator is a device designed to maintain a constant fuel pressure for proper fuel atomization, we are going to focus on fuel pressure regulators designed for fuel injection systems knowing that there are very few carburated vehicles on the streets today since they are not produced anymore.
What are the symptoms of a bad fuel pressure regulator?
The symptoms of a bad fuel pressure regulator include:
Lack of fuel pressure, excessive fuel pressure, black smoke and rich engine running condition, instant drop of fuel pressure once the vehicle has been turned off, delay building sufficient fuel pressure.