dony know, having the same problem- replaced reg. / probably fuel pump diaphragm
55 PSI to 62 PSI no higher are lower are you will have starting or running problems.
9 to 13 LBS. No higher are lower are you will have starting and running problems.
9 to 13 LBS. It must not be 1 # lower are higher. If it is then you will have starting and running problems.
yes
Locate the fuel pressure regulator on the driver side of the intake plenum. Remove the vacuum line from the regulator and see if fuel comes out of the vacuum line. This is a very common problem with the 4.8 and 5.3 engines. And this problem will also not set a diagnostic trouble code.
The fuel pressure regulator in a 1997 Oldsmobile Aurora is responsible for maintaining the correct fuel pressure within the fuel injection system. It ensures that the fuel pressure remains consistent, regardless of changes in fuel demand or engine load. If the regulator fails, it can lead to poor engine performance, decreased fuel efficiency, or starting issues. Regular inspection and maintenance of the fuel system can help prevent problems related to the fuel pressure regulator.
Check fuel pressure, fuel pressure regulator.
the fuel pressure regulator on the fuel rail might be bad
55 to 62 PSI ( KEY ON ENGINE OFF ) If it is lower then 55 and higher then 62 then you will have starting are running problems. Must be on the money.
You need to run fuel pressure test on fuel pump with a gauge. It should have 9 to 13 LBS. no less and no higher are you will have running are starting problems.
To determine if your fuel pressure regulator is bad, check for symptoms such as hard starting, poor fuel economy, or engine misfires. You can also inspect for fuel leaks around the regulator or a strong smell of fuel. Using a fuel pressure gauge, measure the pressure; it should match the manufacturer’s specifications. If the pressure is too high or too low, or if you notice excessive fluctuations, the regulator may be faulty.
To install a fuel pressure regulator on a Pontiac Fiero, first ensure the engine is cool and disconnect the negative battery terminal. Next, relieve the fuel system pressure by removing the fuel pump relay and starting the engine until it stalls. Remove the old regulator by disconnecting the fuel lines and unscrewing it from the intake manifold or fuel rail. Finally, install the new regulator, reconnect the fuel lines, and reattach the battery terminal, ensuring there are no leaks before starting the engine.