For those that read my fuel pressure post in FI I am trying to figure out why I only get 30psi at idle with new FSVT pump, new filter, new pressure sensor. I am told I should be getting 40 psi at idle...and I assume that is with vac connected.
Well, I have been doing a ton of reading on various forums and some corvette guy has me second guessing the method I used to measure my fuel pressure.
I have a returnless system and at idle I get 30 psi and if I remove the vacuum line from the pressure sensor on the rail it rises to 40 psi. Am a suppose to take the number with or withOUT the vac line attached. This guy was saying that the PROPER figure is with the vac disconnected.
Anyone have the definative answer on this one?