Can anyone tell me what the proper fuel pressure for a 4.4l hse v8 should be at the regulator?

 

Each fuel rail maintains constant 65 psi fuel pressure .If you are doing some kind of induction or injection service, this is the pressure that you usually copy on air compressor dials as it is what fuel pump produces 4.5 bar/65 psi.

 

I have a 2005 LR3 that is experincing rough idle at start and engine codes for misfile on cylinder #4. It also has a extreme gas odor. Trying to determine the issue. I checked the the fuel pressure and its around 65/71 PSI.

Any asssitance would be greatly appreciated. Erik