LS 400 V8-4.0L (1UZ-FE) (1990)
Fuel Pressure: Specifications
Fuel Pump
Pressure
No vacuum to regulator ....................................................................................................................................................... 38 - 44 psi (265 - 304 kPa)
With vacuum to regulator .................................................................................................................................................... 33 - 37 psi (226 - 265 kPa)