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JETHRO
03-13-2008, 03:55 PM
90 lx 5.0. What should stock fuel pressure with vacuum line off be? Car runs rich and I checked the pressure with the vacuum line off and it was 42#'s. Seems high to me but figured I would ask. The only thing done to the car is underdrive pulleys. With the line on it was 34#'s.
Rodeheaver's
03-13-2008, 04:37 PM
thats about right, i like to see 35on and 45 off..
JETHRO
03-13-2008, 06:43 PM
OK Ill have to check some other things then.
badf250
03-14-2008, 06:29 PM
Look to see if the O2 sensors are working properly. Does it have the correct injectors? I knew a guy that put in 30lb injectors in his 91LX without changing anything, ran very rich.