I changed fuel filter, spark plugs, and cleaned o2 sensors. also it has a new fuel pressure regulaor. Yesterday rented a fuel pressure reader kit, and i check fuel presure, and I notice that gauge go up to 60 psi whenkey is in the on position, and drops down to 0. I also tryed with the car running holding 60 psi, but when i turn off, goes down to 0 again. also i notice when car is running and i press the gas pedal i see no difference in the gauge, no going up or down, problably just 1 psi or 2, no more. also when car idle it go down 1 or 2 psi from 60 psi.